Extensive irrigation may contribute to desertification because evaporation of water used in irrigation causes salinization of the land, reducing the ability of plants to grow.
Thus, the correct answer is E.
What is desertificaion?Desertificаtion is lаnd degrаdаtion in аrid, semi-аrid, аnd dry sub-humid аreаs, collectively known аs drylаnds, resulting from mаny fаctors, including humаn аctivities аnd climаtic vаriаtions.
While extensive use of wаter from аquifers does creаte mаjor problems, it is evаporаtion of wаter used in irrigаtion thаt cаn leаve behind excess sаlts аnd minerаls, which over time cаn reduce the fertility of the lаnd. The use of drip irrigаtion systems, which reduce wаter usаge, аnd only irrigаting аt night when less of the wаter evаporаtes cаn over time reduce costs, protect the fertility of the lаnd, аnd conserve vаluаble wаter resources.
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Quagga mussels, an invasive species of mollusk originally from
Russia, have been introduced to the lake after being carried in on
the hulls of boats. An assessment of the size of the quagga
mussel problem is needed, along with suggestions to curb their
population growth.
what field of science is this?
This is a problem in the field of ecology.
The problem of quagga mussels in the lake is an ecological issue that requires scientific assessment and management.
It falls under the discipline of ecology, which studies the relationships between organisms and their environment.
Ecologists investigate the impacts of invasive species on the ecosystem and devise strategies to control their spread and minimize their effects.
In this case, scientists will need to examine the size of the quagga mussel population, their distribution, and their ecological interactions with native species.
They will also need to recommend measures to prevent further introduction of quagga mussels and to manage their population growth, such as using chemical treatments or biological controls.
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As a result of meiosis:one diploid cell has divided twice forming 4 haploid cells.gametes are producedgenetic variation increases.All of these choices are correct
Meiosis is a process of cell reproduction and like mitosis consists of prophase, metaphase, anaphase and telophase. However, unlike mitosis, meiosis performs these processes twice, so it has prophase 2, metaphase 2, anaphase 2 and telophase 2.
Importantly, between meiosis 1 and meiosis 2 no replication of genetic material occurs, so at the end of telophase 2, 4 haploid daughter cells will be obtained, which means that they will have only half of the genetic material.
Because of this, this is a process that is used for the formation of gametes (sperm and eggs).
In addition to this, during meiosis 1 homologous chromosomes exchange their genetic material in a process called crossing-over.
Therefore, the answer is D, all options are correct.
Which best describes xylem and phloem ?
A. the flowering parts of a plant
B. chlorophyll that uses light energy to make food for the plant
C. transportation tubes in a vascular plant
D. vascular tubes found only in a plant's stem
Plz help
Answer:
c
Explanation:
They transport warer through out the plant.
How do the layers of the atmosphere help to understand better the dynamics of the atmosphere and its relationship to the hydrosphere and lithosphere?
There are various layers that make up the atmosphere, and each has distinct properties and functions. Both weather generation and energy transmission take place in the troposphere, which is closest to the Earth's surface.
The stratosphere shields the Earth from damaging UV radiation along with the ozone layer. Most auroras happen in the mesosphere, where meteors burn up. Modern technology is dependent on the thermosphere, where the majority of the Earth's satellites orbit and where communication signals are sent.
The dynamics of the atmosphere and its interactions with the hydrosphere and lithosphere are better understood thanks to these layers. Foreseeing and minimising environmental problems like climate change and preserving our world, it is essential to understand the significance of each layer.
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ENZYME CATALASE LAB (directions to lab)
1. State the problem
2. Catherinformation
2. Forma lyhen
4. Experiment
Independent Variable
What you call
Part Norma Ename Cate
Volume of a Produced (ml.)
wal
TV
WE
6. Part II C
Volume of Os Produced (L.)
Time Trat
TW
AN
0
0
3
-3
LO
LO
1.3
1.5
to
20
25
25
30
3.0
33
4.0
4.0
4-5
4.5
5.0
5.
7.) chok your data using this lind paste in the box
mal Eray Catil Retation Rate
"Hendaye Catalin Race
Answer:
ENZYME CATALASE LAB (directions to lab)
1. State the problem
2. Catherinformation
2. Forma lyhen
4. Experiment
Independent Variable
What you call
Part Norma Ename Cate
Volume of a Produced (ml.)
wal
TV
WE
6. Part II C
Volume of Os Produced (L.)
Time Trat
TW
AN
0
0
3
-3
LO
LO
1.3
1.5
to
20
25
25
30
3.0
33
4.0
4.0
4-5
4.5
5.0
5.
7.) chok your data using this lind paste in the box
mal Eray Catil Retation Rate
"Hendaye Catalin Race
PLEASE HELP I WILL MARK YOU BRAINLY I HAVE A TEST TOMORROW
Describe how the total energy in the ecosystem is conserved within the ecosystem in a bottle.
Answer:
The warmth from the sunlight causes the excess water in the terrarium to evaporate and rise to the top of the bottle. Once the water vapor reaches the top of the glass, it cools and condenses back into liquid droplets. These droplets drip back down onto the moss, creating 'rain' to keep the ecosystem moist.
Why does warm air rise
Answer:
When we heat air, the molecules jiggle and zip around faster, which causes them to spread out. When a mass of air takes up more space, it has a lower density. ... Warm air rises when it's surrounded by cold air because of its lower density.
Explanation:
hope this helps :)
Answer:
SAMPLE: When we heat air, the molecules jiggle and zip around faster, which causes them to spread out. When a mass of air takes up more space, it has a lower density. ... Warm air rises when it's surrounded by cold air because of its lower density.
Explanation:
What this means is that when it is hot outside, molecules move faster and faster. This propels the molecule up since the molecule cannot handle low density. This is because when molecules occupy space and a molecule is moving very fast, it needs as much space as possible to move.
Please mark Brainliest.
What are the steps for photosynthesis?
Photosynthesis is defined as the process by which plants use energy from sunlight in the manufacturing of food.
What are the steps of photosynthesis?The photosynthetic process in green plants occur in four distinct steps that includes the following:
Absorption of light: This is the first and important stage of photosynthesis that involves the absorption of light by the chlorophyll which is located at the chloroplast of.most green plants. This leads to the splitting of waters molecules to form oxygen.Electron transfer: As the electrons are transferred through the membrane, protons are pumped out of the membrane, resulting in the proton gradient across the membrane.Generation of Adenosine triphosphate (ATP): The movement of protons from the thylakoid lumen to the stroma leads to the generation of ATP.Carbon fixation: The ATP generated drive the process of reducing carbon into six-carbon sugar molecules.Learn more about photosynthesis here:
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________ cells lack a membrane-enclosed nucleus.
Answer:
Prykaryotic
Explanation:
Prykaryotic cells lack a membrane-enclosed nucleus.
Describe the human respiratory system and its functions
The respiratory system is a network of organs to help you breathe
The main function is to supply the blood with oxygen in order for the blood to deliver oxygen for all parts within the body. When we breathe, we inhale oxygen and exhale carbon dioxide.
rain results when water from the atmosphere condenses
Answer:
If it is true or false, that would be true.
Answer:
true
Explanation:
plant that grow in desert
Answer:
There are many plants that grow in the desert, such as cactus. But there are other examples.
Succulents,
Wildflowers,
Trees,
Shrubs,
and Grasses
I hope this helps! : )
In Activity 2, which of the respirometers serves as a control? Explain your answer! Why was it the control? You should write at least 3 sentences to explain this. Respirometer A contains germinated beans. respirometer B contains dormant beans and plastic beads respirometer C contains plastic beads.
In Activity 2, the respirometer C serves as the control. A control is an essential part of any scientific experiment as it provides a baseline against which the experimental results can be compared.
Respirometer C containing only plastic beads does not contain any living organisms and therefore does not undergo cellular respiration. By comparing the results of respirometers A and B with the control (respirometer C), any changes in oxygen consumption and carbon dioxide production can be attributed to the metabolic activity of the germinated beans in respirometer A and the dormant beans in respirometer B.
This allows researchers to determine the specific effects of germination on cellular respiration by isolating the variables and eliminating any external factors that could influence the results.
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What are three reasons why dispensing errors occur
The celery and potatoes in the salt water wilted and got soft because there was less water outside the cells. The water left to achieve balance. What could you do to make them firm again?
Answer: Adding more water outside the cells.
Ecological models are _________ because they help scientists ________ what will occur in real life.
Answer:
Ecological models are useful because they help scientists predict what will occur in real life.
What
happens once a neurotransmitter is received by a post synaptic neuron receptors
Answer:
Neurotransmitter binding increases membrane permeability and form a new action potential.
Explanation:
Neurotransmitters are specific lipid-based compounds that are used in the nervous system in chemical signal transduction. They exhibit receptor-specific functions in triggering many regions and physiological responses of the brain and spinal cord or the central nervous system (CNS).
When released into the space between the synapses called the synaptic cleft, they trigger a range of responses. On the postsynaptic cells they briefly bind to chemical receptors. This results in changes to the membrane which increases the cells' permeability to ions like Na+; a new action potential is created.
A number of plant species have a recessive allele for albinism; homozygous albino individuals are unable to synthesize chlorophyll. If a heterozygous tobacco plant is allowed to self-pollinate and 500 of its seeds germinate –
How many of these offspring will be expected to have the same genotype as the parent plant?
How many seedlings will be expected to be albino?
If we denote the recessive allele of the gene as p and the dominant allele as P, the offspring will be of phenotypic ratio 3:1 those with chlorophyll to those without chlorophyll respectively.
What is the percentage of genotype?Genotypically, 25% would be homozygous for dominant allele, 50% heterozygous and 25% homozygous recessive. See attached punnet square.
A number of plant species have a recessive allele for albinism homozygous albino individuals are unable to synthesize chlorophyll. If a heterozygous tobacco plant is allowed to self-pollinate and 500 of its seeds germinate.
Therefore, If we denote the recessive allele of the gene as p and the dominant allele as P, the offspring will be of phenotypic ratio 3:1 those with chlorophyll to those without chlorophyll respectively.
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What are some of the facts about sexual reproduction? A . Takes two mates to reproduce and take a longer time to reproduce B. Takes one mate to reproduce and take a shorter amount of time to reproduce C. Take two mates to reproduce and take a shorter amount of time to reproduce D. Takes one mate to reproduce and takes a loner amount of time to reproduce.
When does movement of materials in and out of the cell NOT require energy
What dosage schedule is represented by the graph below?
A. One pill every hour.
B. One pill every 3 hours.
C. One pill every 5 hours.
D. One pill every 7 hours.
The graph shows that there is a peak approximately every 5 hours. This means that the medication is taken once every 5 hours, C. One pill every 5 hours.
What is dosage schedule?A dosage schedule is a plan for how often and how much of a medication to take. It is important to follow the dosage schedule exactly as prescribed by a doctor, as taking too much or too little of a medication can be dangerous.
Dosage schedules can vary depending on the medication, the patient's age and weight, and the condition being treated. Some medications are taken once a day, while others are taken multiple times a day. The dosage may also be adjusted over time, depending on how the patient is responding to the medication.
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What are the five senses? Type your brainstorm
Answer:
Sense: Smell, Taste, Touch, Sight, Hearing
Explanation:
Answer:
touch, sight, hearing, smell, taste
Explanation:
Touch is thought to be the first sense that humans develop, according to the Stanford Encyclopedia of Philosophy. Touch consists of several distinct sensations communicated to the brain through specialized neurons in the skin. Pressure, temperature, light touch, vibration, pain and other sensations are all part of the touch sense and are all attributed to different receptors in the skin.
Sight, or perceiving things through the eyes, is a complex process. First, light reflects off an object to the eye. The transparent outer layer of the eye called the cornea bends the light that passes through the hole of the pupil. The iris (which is the colored part of the eye) works like the shutter of a camera, retracting to shut out light or opening wider to let in more light.
hearing sense works via the complex labyrinth that is the human ear. Sound is funneled through the external ear and piped into the external auditory canal. Then, sound waves reach the tympanic membrane, or eardrum. This is a thin sheet of connective tissue that vibrates when sound waves strike it.
Humans may be able to smell over 1 trillion scents, according to researchers. They do this with the olfactory cleft, which is found on the roof of the nasal cavity, next to the "smelling" part of the brain, the olfactory bulb and fossa.
The gustatory sense is usually broken down into the perception of four different tastes: salty, sweet, sour and bitter. There is also a fifth taste, defined as umami or savory. There may be many other flavors that have not yet been discovered. Also, spicy is not a taste.
50 pts!!PLEASE HELP HURRY-TIMED-
Answer each question individually
___________________________
1) what effect does the higher percentage of the compact bone portion have upon weight of the bone
2) describe the texture of the marrow from the chicken bone
3) describe the texture of the marrow from the beef bone
6) which narrow was denser?(had more mass in the given volume)? What impact would that have on the overall density of the bone
7) in a short paragraph, relate the density of the bone to the activities and environment of each animal, both bird and cattle (just give like 2 sentences)
Answer:
Explanation:
A higher percentage of compact bone portion typically results in a heavier bone, as compact bone is denser than spongy bone and contains more mineralized tissue.The marrow from a chicken bone is usually soft and gelatinous, with a slightly yellowish-white color.The marrow from a beef bone is typically firmer and more solid than chicken marrow, with a reddish-brown color.I apologize, but there seems to be a question missing from the sequence.The denser marrow was not specified, so I cannot answer this question.The overall density of the bone would be impacted by the density of the marrow, as well as the density of the compact and spongy bone portions.The density of the bone is related to the activities and environment of each animal. For example, birds that fly and need to be lightweight tend to have bones with a higher percentage of air spaces and spongy bone, which reduces weight. Cattle, on the other hand, have denser bones to support their larger bodies and movements on land.
state how glucagon and insulin reaches the pancreas?
Answer:
They are released from the beta cells in your pancreas in response to rising glucose in your bloodstream.
After you eat a meal, any carbohydrate you've eaten are broken down into glucose and are passed into the bloodstream. The pancreas detects he rise in the blood glucose and stays to secrete insulin.
Describe two ways that technology has hurt the environment.
The two ways that technology has hurt the environment is pollution and mental health issues.
What is pollution?Pollution is defined as the release of harmful substances to the environment which can harm the organism living in that ecosystem.
Technology has both being a negative and a positive influence to the environment.
The two ways that technology has hurt the environment is pollution and mental health issues.
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Which substances are cycled between living thing and non living environments?
If the three-base combination of T-C-G within a gene was in the process of DNA synthesis, what would be the complimentary base
pair?
Answer:
AGC
Explanation:
During DNA, synthesis, a new DNA strand is created based on the sequence of the original strand by complementary base pairing.
Complementary base pairing occurs between A and T and C and G.
Therefore, a sequence of TCG would have the complementary sequence AGC
Imagina que un contaminante no biodegradable es arrojado al agua de este ecosistema. ¿Qué puede ocurrir con esté contaminante en el impacto del ecosistema?
Answer:
Cuáles son los ecosistemas más afectados por un derrame de petróleo? ... Como el agua
Explanation:
HELP PLEASE!!
Why does a cell divide into
two smaller daughter cells
when it becomes too large?
A. to have more available cell membrane to
transfer substances such as waste in and
out of the cells
B. to give DNA in the cell more room to
grow
C. because the organism needs more cells
to grow
Answer:
The answer is A
to have more available cell membrane to transfer subtances such as waste in and out of the cells
Lab 9: Kingdom Plantae (12 Points) Introduction Plants are defined as multicellular eukaryotes with cell walls made of cellulose. Nearly all of them contain chlorophyll and carry out photosynthesis. Being photoautotrophs, plants can make all their own organic molecules. All they need is energy from light, carbon from carbon dioxide, water, and various elements (like N, P, K, Ca, and Mg). Water can be absorbed into a plant by osmosis, but it can only travel a few cells away from a source. In order to transport water long distances, some groups of plants have specialized tissues (vascular tissue). Plants without vascular tissues must live in wet areas and cannot grow very tall. Consult the plant lecture, slides, and links on Canvas for more information on defining features of plants and groups of plants. Part 1: Comparing major groups of plants Within the plant kingdom, biologists separate plants into four major groups: bryophytes (mosses and llverworts), pteridophytes (ferns), gymnosperms (conifers), and anglosperms (flowering plants). The separations are primarily based on anatomical structures, particularly the ones they use to transport water in their bodies, and on the different ways in which plants reproduce sexually. **What to submit for this activity** Use the information from lectures, the textbook, and any other sources of your choice to fill out the table comparing the four major groups of plants. Submit your completed table as part of what you upload to the Canvas lab assignment for this week. (5 Points) What are one or more examples? Do they have vascular tissue (xylem and phloem)? Which part of the life cycle/generation is more dominant in structure? (Gametophyte or Sporophyte?) What other characteristics can help you identify this group? (List at least 2 or more) Mosses and liverworts (Bryophytes) Ferns and relatives (Pteridophytes) Conifers (Gymnosperms) Flowering plants (Angiosperms)
Mosses and liverworts (Bryophytes):
- Example: Mosses (e.g., Sphagnum moss) and liverworts (e.g., Marchantia)
- Vascular tissue: No true vascular tissue (lack xylem and phloem)
- Dominant structure: Gametophyte generation is more dominant in structure
- Other characteristics:
1. Lack of true roots, stems, and leaves; instead, they have rhizoids.
2. Reproduce via spores and require water for fertilization.
Ferns and relatives (Pteridophytes):
- Example: Ferns (e.g., Polypodium) and horsetails (e.g., Equisetum)
- Vascular tissue: Have true vascular tissue (xylem and phloem)
- Dominant structure: Sporophyte generation is more dominant in structure
- Other characteristics:
1. Reproduce via spores produced in structures called sporangia.
2. Exhibit well-developed leaves called fronds and often have underground stems (rhizomes).
Conifers (Gymnosperms):
- Example: Conifers such as pine trees (e.g., Pinus) and spruces (e.g., Picea)
- Vascular tissue: Have true vascular tissue (xylem and phloem)
- Dominant structure: Sporophyte generation is more dominant in structure
- Other characteristics:
1. Produce seeds in cones.
2. Typically have needle-like or scale-like leaves and are often evergreen.
Flowering plants (Angiosperms):
- Example: Flowering plants include roses (e.g., Rosa), sunflowers (e.g., Helianthus), and oak trees (e.g., Quercus)
- Vascular tissue: Have true vascular tissue (xylem and phloem)
- Dominant structure: Sporophyte generation is more dominant in structure
- Other characteristics:
1. Produce flowers for sexual reproduction.
2. Seeds are enclosed within fruits.
3. Have a wide range of forms, from small herbs to large trees.
Please note that the examples provided are just a few representatives of each plant group, and there are many more species within each group.Mosses and liverworts (Bryophytes):
- Example: Mosses (e.g., Sphagnum moss) and liverworts (e.g., Marchantia)
- Vascular tissue: No true vascular tissue (lack xylem and phloem)
- Dominant structure: Gametophyte generation is more dominant in structure
- Other characteristics:
1. Lack of true roots, stems, and leaves; instead, they have rhizoids.
2. Reproduce via spores and require water for fertilization.
Ferns and relatives (Pteridophytes):
- Example: Ferns (e.g., Polypodium) and horsetails (e.g., Equisetum)
- Vascular tissue: Have true vascular tissue (xylem and phloem)
- Dominant structure: Sporophyte generation is more dominant in structure
- Other characteristics:
1. Reproduce via spores produced in structures called sporangia.
2. Exhibit well-developed leaves called fronds and often have underground stems (rhizomes).
Conifers (Gymnosperms):
- Example: Conifers such as pine trees (e.g., Pinus) and spruces (e.g., Picea)
- Vascular tissue: Have true vascular tissue (xylem and phloem)
- Dominant structure: Sporophyte generation is more dominant in structure
- Other characteristics:
1. Produce seeds in cones.
2. Typically have needle-like or scale-like leaves and are often evergreen.
Flowering plants (Angiosperms):
- Example: Flowering plants include roses (e.g., Rosa), sunflowers (e.g., Helianthus), and oak trees (e.g., Quercus)
- Vascular tissue: Have true vascular tissue (xylem and phloem)
- Dominant structure: Sporophyte generation is more dominant in structure
- Other characteristics:
1. Produce flowers for sexual reproduction.
2. Seeds are enclosed within fruits.
3. Have a wide range of forms, from small herbs to large trees.
Please note that the examples provided are just a few representatives of each plant group, and there are many more species within each group.