How does a keystone species positively contribute to biodiversity in an ecosystem?

a. predation of many species
b. predation of one important species
c. helps invasive species to populate area
d. keystone species do not positively contribute to biodiversity, rather hurt it

(please help me quickly this is due in 5min my last question)

Sporophytes are larger, diploid organisms that can photosynthesize, while gametophytes are smaller, haploid structures dependent on sporophytes. They have specialized tissues, while gametophytes lack vascular tissues and rely on sporophytes for nutrients and water.

Two distinctions between sporophytes and gametophytes in ferns are:

1. Size and Complexity: Sporophytes in ferns are typically larger and more complex compared to gametophytes. The sporophyte is the dominant and visible phase of the fern life cycle. It is a diploid organism that develops from the fertilized egg and consists of roots, stems, and leaves. Sporophytes are capable of producing spores through meiosis, which are dispersed and develop into gametophytes. In contrast, gametophytes are smaller and simpler structures. They are haploid and develop from spores. Gametophytes produce gametes (sperm and eggs) through mitosis, which then fuse during fertilization to form the sporophyte.

2. Nutritional Dependency: Sporophytes in ferns are typically independent and self-sufficient when it comes to obtaining nutrients. They possess specialized tissues such as roots, stems, and leaves, which enable them to absorb water and nutrients from the environment. Sporophytes can photosynthesize and produce their own food through the process of photosynthesis. On the other hand, gametophytes in ferns are nutritionally dependent on the sporophyte. The gametophyte stage is often a small, heart-shaped structure called a prothallus. The prothallus lacks vascular tissues and cannot photosynthesize as efficiently as the sporophyte. Instead, it relies on the sporophyte for nutrients and water.

These distinctions highlight the contrast between the dominant, larger, and nutritionally independent sporophyte stage and the smaller, simpler, and nutritionally dependent gametophyte stage in the fern life cycle.

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The shortage of the resources along with the maintenance as this sis why the requirement that is getting lesser has impacted the industry. Although it contributes a large amount to the economy.

It is the sheep that was named as Dolly and was invented in 2002 by cloning.

The shortage of the  large-animal veterinarians taking place in many areas of country is  challenge to sheep industry and to the  other livestock industries as well . The same conditions led to the short fall in the United states as well.

Today, the domestic sheep count is 1/10 of  the size it was in  the World War II in the United states . The decrease is a  result of  the economic and  the cultural factors  that are coming together And it has left to the  wonders. Some of the  sheep that are raised for the wool  others primarily for food.

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Answer:

1

atomnnajsjhzbzzbzjjnbsj jsjsksksksksk

Answer:

Explanation:

Atoms make up molecules; molecules make up cells; cells make up tissues; and two or more kinds of tissues working together make an organ and lots of organs working together creates an organ system

Answer: A solution is a mixture in which one substance is dissolved in another. When elements and compounds that are dissolved in water leave a solution, crystallization occurs.

Explanation: Hope this helps! :)

Answer:

true

-Sumin <3

Answer:

tr

Explanation:

which of what? is there an attachment

The pH changes in the food vacuoles due to the increase in the acidity of the fluid, because of respiration process in the ingested organisms.

In chemistry, the pH scale is used to define the acidity or basicity of an aqueous solution. Historically, pH stood for "potential of hydrogen." The pH values of acidic solutions are typically lower than those of basic or alkaline solutions.

The respiration of the organisms that have been consumed, the chemical changes brought on by their death, the disintegration of the consumed plasmalemma, the impermeability of the membrane surrounding the vacuoles to acids, and the diffusion of fluid from the vacuoles are all likely to be to blame for the increase in acidity of the fluid in the food vacuoles.

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Answer:

The first one

Explanation:

vapor particles move faster than liquid particles do.

Not sure what basic means in this context but it would be considered alkaline and definitely not acidic so I'd say basic.

Answer:

C) It allows for more genetic diversity of gametes.

Explanation:

Mendel's Law of independent assortment states that alleles cross over to create genetic diversity.

Cyanobacteria are one of the most ancient groups of photosynthetic organisms. They played a critical role in the evolution of complex life on land by producing oxygen. They are also known as blue-green algae. They have existed on Earth for more than 3.5 billion years and played an essential role in creating Earth's oxygen-rich atmosphere. The emergence of cyanobacteria marks a significant point in Earth's evolution.

The presence of oxygen allowed for the development of complex organisms, including plants and animals. Cyanobacteria aided the evolution of complex life on land by their ability to photosynthesize. They were the first organisms to evolve a complex process that enabled them to use sunlight to convert carbon dioxide and water into oxygen and glucose.

This process is known as photosynthesis, and it is responsible for the oxygen-rich atmosphere of our planet. Cyanobacteria were the first photosynthetic organisms to produce oxygen. During Precambrian time, cyanobacteria produced more oxygen than any other organism. They were responsible for oxygenating Earth's atmosphere and allowing for the evolution of aerobic organisms.

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The disparity in growth between tissue culture plants and plants propagated by division could be caused by several factors like lack of acclimatization, genetic variability, nutrient and hormone imbalances, etc.

The factors include:

1. Lack of acclimatization: Tissue culture plants are typically grown in controlled laboratory conditions, which provide an artificial environment with optimal temperature, humidity, and nutrient levels. When these plants are transferred to natural growing conditions, they may struggle to adapt and establish themselves. In contrast, plants propagated by division have already been growing in a more natural environment, making them better adapted to the conditions they will face.

2. Genetic variability: When plants are propagated by division, each division retains the genetic characteristics of the parent plant. In tissue culture, however, there is a higher risk of genetic variability due to somaclonal variation. Somaclonal variation refers to genetic changes that can occur during the tissue culture process, leading to differences in growth and development. These genetic variations can affect the overall performance and vigor of tissue culture plants compared to divisions.

3. Nutrient and hormone imbalances: Tissue culture plants rely on a nutrient-rich medium and specific growth hormones to promote their development. However, the composition of the culture medium and the hormonal balance may not perfectly mimic the natural conditions required for optimal growth and development. This imbalance can impact the ability of tissue culture plants to establish robust root systems and undergo normal growth processes.

4. Microbial contamination: Tissue culture plants are more susceptible to microbial contamination, such as bacterial or fungal infections, during the tissue culture process. These contaminants can negatively affect plant growth and development, leading to poor performance compared to plants propagated by division.

5. Stress during transplantation: Transferring tissue culture plants from the laboratory conditions to the field or greenhouse can be a stressful process. The plants may experience shock due to changes in temperature, light levels, humidity, and other environmental factors. This stress can hinder their growth and establishment compared to plants propagated by division, which have already undergone a more gradual acclimatization process.

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Answer:

Invasive species

Explanation:

Ecosystems are very delicate and need many species to maintain balance. However, invasive species are unnecessary. Invasive species are animals or plants that are introduced into an environment that they did not originate in or are not native to. They tend to hurt the ecosystem because they consume resources that the native species need.

Answer:

Invasive species

Explanation:

Hope this helps

Bioremediation offers a potential solution for addressing the diverse pollution resulting from a burned mountain, affecting the air, water, and soil.

To tackle air pollution, phytoremediation can be employed by planting specific vegetation known for their air-purifying properties, enabling them to absorb and break down airborne pollutants through their leaves and roots.

For water pollution, bioaugmentation involves introducing specialized microorganisms into the contaminated water, enhancing natural degradation processes. Constructed wetlands and biofiltration systems with plants and microbial communities aid in the filtration and breakdown of water pollutants.

Soil pollution can be mitigated through biodegradation, utilizing microorganisms capable of breaking down organic pollutants, and phytoremediation with deep-rooted plants that stabilize the soil and promote microbial activity.

However, it's crucial to assess site-specific factors and implement complementary measures like erosion control and prevention of future fires for successful and sustainable environmental restoration.

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Reduced permeability of potassium leak channels would affect the time to reach maximum repolarization of the action potential in a neuron.

Potassium leak channels allow potassium ions to passively diffuse out of the cell, contributing to the resting membrane potential of the neuron.

During an action potential, potassium ions move out of the cell through voltage-gated potassium channels, which contributes to repolarization of the membrane potential.

If the permeability of potassium leak channels is reduced, less potassium will be able to leak out of the cell at rest, which would result in a less negative resting membrane potential.

This would increase the excitability of the neuron and may cause it to fire more easily.

During an action potential, the reduced permeability of potassium leak channels would result in less potassium leaving the cell during repolarization, which would slow down the repolarization phase and increase the time to reach maximum repolarization.

This may affect the neuron's ability to fire at high frequencies and could potentially lead to issues with neuronal signaling.

Therefore, option C ("the time to reach maximum repolarization") is the correct answer.

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The statement (B) is correct. They can eat fat only in small amounts.

The gallbladder is a storage pouch for bile, a liquid that aids digestion. The liver continually makes bile, which is stored in the gallbladder until you eat.

Moreover, the gallbladder serves the following three functions: It stores bile, it concentrates bile, and, when stimulated to contract, it ejects bile into the lumen of the small intestine.

Hence, anyone can lead a perfectly normal life without a gallbladder. Your liver will still make enough bile to digest your food, but instead of being stored in the gallbladder, it drips continuously into your digestive system.

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Answer:

Enzymes are a protein in nature and are made when amino acid links together in the correct sequence.

Answer: her child will have the mutation in all of his/her cells

Explanation:

Eating a very-low-calorie diet for prolonged periods, the body may begin to obtain fuel from protein in lean body tissue.

The body converts food and liquids into energy through a process called metabolism. The calories from food and beverages combine with oxygen during this process to create the energy the body requires. Even when in rest, a body need energy to function.

More muscular individuals frequently have faster metabolisms that burn more calories. Age: As we age, we lose muscle, which causes the metabolism to slow. Sex: Compared to women, men often have faster metabolisms. They are leaner, have bigger bones, and less body fat.

When you are active and at rest, you will burn more calories if your metabolism is "high" (or fast). You will require more calories to maintain your weight if your metabolism is high.

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Answer:

Amylase is not the enzyme found in saliva it is ptyalin

Explanation:

the digestion of starch starts in the mouth.

the ptyalin hydrolysis the starch.

An uncommon disorder where the body stops making enough new blood cells.

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Answer:

because they were extremely un-reactive. Being inert, they were difficult to isolate via chemical reactions, thus difficult to distinguish as separate elements

Explanation:

The noble gases of group 18 were the last to be discovered because they are highly unreactive or inert.

Noble gases refer to elements in group 18. These elements are renowned for being inert.

As a result of their inertness and because they are all gases, they are sometimes called "inert gases".

This chemical inertness made it difficult to discover these elements until lately. Many natural elements were discovered because they participate in chemical reactions. Hence, inert gases became the last natural elements to be discovered.

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Answer:

structure

The arrangement of atoms in gold follows what's called a "​face centred cubic" (fcc) structure. Put simply, the atoms in gold form cubes, with an atom at each of the corners, and another atom in the centre of each of the faces (you can see what this looks like in the image below).

bonding

Silver, iron, platinum, gold, and copper all form metallic bonds. Unlike covalent bonding, metallic bonding is non-directional. The strong bond consists of positively charged metal atoms in fixed positions, surrounded by delocalized electrons.

Explanation:

Gold's atoms are face-centered cubic (fcc) and has metallic bonding in it's structure.

Because a cloud of electrons holds the atomic nuclei of gold together, gold is soft. Instead of having a set of electrons allocated to one nucleus, this cloud floats through the gold framework. Metallic bonds are the forces that exist between the nuclei and the electron cloud.

In gold, atoms are arranged in a configuration known as a "face-centered cubic" (fcc) structure. Simply put, the gold's atoms take the shape of cubes with one at each of their four corners and another in the middle of each of their six faces.

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The five components of scientific method are: observations, questions, hypothesis, methods and results. Following scientific method procedure not only ensures that experiment can be repeated by other researchers, but also that the results garnered can be accepted.

1. Define a Question to Investigate

As scientists conduct their research, they make observations and collect the data. The observations and data often lead them to ask why something is the way its

2.Make Predictions

Based on their research and observations, scientists will often come up with hypothesis. A hypothesis is possible answer to a question.

3. Gather Data

Evidence is needed to test prediction. There are several strategies for collecting evidence, or data. Scientists can gather their data by observing the natural world, performing an experiment in laboratory, or by running mode

4. Analyze the Data

Scientists organize their data in tables, graphs, or the diagrams. If possible they include relevant data from other sources

5. Draw Conclusions

Based on whether or not their prediction came true scientists can then decide whether evidence clearly supports or does not support hypothesis

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Answer:

vertebrae

Explanation:

did the quiz got it right

Answer:

2nd answer

Explanation:

I'm pretty sure Neon has 10 protons 10 neutrons and 10 electrons

Hope this helps :)

The American crocodiles became more vulnerable to environmental change, is a likely consequence of the reduction of their gene pool. Therefore, option b is correct.

The change which is occurred by both human as well as natural process is called environmental change. Through transformation and transportation of large quantities of energy and materials environmental changes are bought about by environmental systems and human activities.

Some major environmental changes are:

Therefore, option b is correct.

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