bryophytes have: group of answer choices seeds true leaves vascular tissue alternation of generations pollen

Answer:Ocean sediments

Explanation:

Answer: The plasma membrane or cell membrane provides protection for a cell

Explanation: it also provides. Functions

The function of the cell membrane in a cell is that the plasma membrane or cell membrane provides protection for a cell or we can say that the function of cell membrane is to protect the cell.

The cell membrane has been defined as the structure found in the cell and the function of cell membrane is to provide protection to the cell. The cell contain several cell organelles and these are ribosomes, golgi appratus, nucleus, and the cell organelles have different functions.

When movement of molecules is takes place then it is called active transport. Active transport movement is always from lower concentration to a region of higher concentration gradients. So we can say that  substance are moving their own concentration gradients.

Therefore, The function of the cell membrane in a cell is that the plasma membrane or cell membrane provides protection for a cell or we can say that the function of cell membrane is to protect the cell.

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Answer:

negatively

Explanation:

this is because the reef and both the water will be polluted and change color

large plantations that grow a single species of tree that undergoes intensive cropping are an example of wheat plantation.

An intensive cropping system is defined as a type of agricultural production system where high inputs of fertilizer, pesticides, labor and capital on a  land area being farmed.

For example Wheat , Maize (mechanical harvesting), Soybean (genetic modification), Tomato; These type of Cropping systems has to be evolved based on climate, soil and availability of water and use of available natural resources.

Other factor responsible for this cropping are increase in population has put pressure on land to increase productivity per unit area, unit time and for unit resource used, should  provide enough food for the family, fodder for cattle and generate sufficient cash income.

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Answer: Chlorophyll

Hope this helps :)

Answer:

D, chlorophyll

Explanation:

chlorophyll is one of the most process of making their own food.

Answer:

(A) Pandemic

(B) Epidemic

(C) Epidemiology

(D) Contact Tracing

Explanation:

Answer:

Answer:(A) Pandemic

Answer:(A) Pandemic(B) Epidemic

Answer:(A) Pandemic(B) Epidemic(C) Epidemiology

Answer:(A) Pandemic(B) Epidemic(C) Epidemiology(D) Contact Tracing

Answer:(A) Pandemic(B) Epidemic(C) Epidemiology(D) Contact TracingExplanation:

please make me brainalist and keep smiling dude

Sponges, cnidarians, and flatworms lack a specialized gas exchange surface primarily because nearly all of their cells are in direct contact with the external environment, making specialized structures unnecessary.

Sponges, cnidarians, and flatworms are simple organisms with relatively small body sizes and low metabolic rates. Unlike more complex animals, they do not possess circulatory systems for the transport of gases throughout their bodies. However, their body structures allow for a high surface area-to-volume ratio, enabling efficient gas exchange through simple diffusion.

These organisms are composed of relatively few cell layers, and the majority of their cells are in direct contact with the external environment. As a result, gases can easily diffuse across their thin cell membranes, eliminating the need for specialized respiratory structures. The simplicity of their body plans and their reliance on diffusion for gas exchange are sufficient for meeting their metabolic needs.

While sponges, cnidarians, and flatworms lack specialized gas exchange surfaces, it does not mean they can survive without oxygen. Like all living organisms, they require oxygen for cellular respiration to produce energy. However, their simple body structures and low metabolic rates allow them to obtain the necessary oxygen through direct diffusion across their cells' surfaces.

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D. The lung's capacity for oxygen will be negatively affected.

The lung has a capacity of a about 5L this will decrease becuase the mass will obstruct the airway.

Answer:

Explanation:

Answer:

The Convention on Biological Diversity (CBD) has three main objectives: the conservation of biological diversity; the sustainable use of the components of biological diversity; an the fair and equitable sharing of the benefits arising out of the utilization of genetic resources.

Explanation:

"Biological diversity" means the variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are part; this includes diversity within species, between species and of ecosystems.

Answer:

A. Carbon flux refers to the movement of carbon from one reservoir to another. It is a crucial component of the carbon cycle and plays a significant role in the Earth's climate system. Carbon flux can occur through various processes such as photosynthesis, respiration, combustion, and decomposition. The movement of carbon between different reservoirs such as the atmosphere, oceans, and land surface, influences the concentration of atmospheric CO2 and affects the Earth's climate.

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Best Explanation of Evolutionary Advantages of Habituation: Option B - Habituation allows an animal to tune out unimportant stimuli and focus on things that are essential to survival or reproduction.

1. Habituation refers to the process by which an animal becomes accustomed to a repeated or constant stimulus and gradually reduces or eliminates its response to that stimulus.

2. Option A suggests that habituation improves an animal's odds of survival because the habituated animal will not waste energy investigating novel objects. While this may be true to some extent, it does not fully explain the evolutionary advantages of habituation.

3. Option B states that habituation allows an animal to tune out unimportant stimuli and focus on things that are essential to survival or reproduction. This explanation aligns with the concept of selective attention, where an animal can prioritize relevant information and ignore irrelevant or non-threatening stimuli. By filtering out non-essential stimuli, the animal can allocate its limited resources more efficiently, such as energy and attention, towards activities that directly contribute to its survival or reproductive success.

4. Option C proposes that habituation enables an animal to generalize from bad experiences and avoid similar situations in the future. While this can be a potential advantage of habituation, it does not fully capture the evolutionary benefits of the process.

5. Option D suggests that an animal that becomes habituated to a stimulus learns from repeated exposure that positive outcomes, such as food, are associated with the stimulus. While this may be true in some cases, it does not encompass the broader advantages of habituation in terms of selective attention and efficient resource allocation.

In conclusion, option B provides the best explanation for the evolutionary advantages of habituation as it highlights the ability of animals to filter out unimportant stimuli and prioritize essential information for survival and reproduction.

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The citation you provided is a reference to a scientific article titled "Overexpression of Caldesmon Is Associated With Lymph Node Metastasis and Poorer Prognosis in Patients With Oral Cavity Squamous Cell Carcinoma.

It suggests that the article investigates the association between the overexpression of caldesmon and lymph node metastasis as well as prognosis in patients with oral cavity squamous cell carcinoma (OCSCC). Caldesmon is a protein involved in regulating the contraction of smooth muscle cells and is associated with various cellular processes.

The article may present research findings or observations indicating that increased expression of caldesmon is correlated with a higher likelihood of lymph node metastasis, which refers to the spread of cancer cells to nearby lymph nodes, as well as a poorer prognosis in patients with OCSCC. Understanding the molecular markers and factors that contribute to disease progression and prognosis can aid in patient management and treatment decisions.

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Young leaves that are just emerging from the bud may be considered sinks for phloem transport because they are actively growing and require a lot of energy and nutrients to support their development.

These young leaves are not yet capable of producing their own food through photosynthesis, so they rely on the phloem transport system to provide them with the necessary sugars and other nutrients. As a result, phloem transport is directed towards the young leaves, which act as sinks that consume the nutrients being transported. Once the leaves mature and start producing their own food, they become sources for phloem transport rather than sinks. In young leaves that are just emerging from the bud, the demand for nutrients and energy is  high, as the leaves are actively growing and undergoing photosynthesis. Therefore, they are strong sinks for phloem transport, meaning that they require a large amount of nutrients and energy from the source tissues to support their growth and development.

As the leaves mature and reach their full size, they become less of a sink for phloem transport and may even become a source tissue, exporting excess nutrients and energy to other parts of the plant. Overall, the distribution of nutrients and energy via phloem transport is critical for the growth and development of the entire plant.

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Answer:

The three basic, structural components of a compound microscope are the head, base and arm.

i think say thanks

Explanation:

Line graph is used to plot the relationship between dependent and independent variables by connecting the data points one plots via line.

These are the variables used in mathematical modelling , statistical modelling and experimental sciences.

The independent variable is the cause , its value is independent of other variables being studied and exists individually.

The dependent variable is the effect. The change in the value of dependent variable occurs due to change in the independent variable.

The correlation between dependent and independent variables can be studied by plotting a scatter graph and then connecting the dots to draw  a line graph in order to establish a relation.

Therefore, line graph is the correct choice here.

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Answer:

Variation, Overproduction, Adaptation, Descent with Modification

Explanation:

Variation: Heritable differences that exist in every population are the basis for natural selection.

Overproduction: Competition between offsprings for resources.

Adaptation: a trait that helps an organism survive and reproduce

Descent with Modification: Natural Selection will result in species with adaptation that are well suited for survival and reproduction.

Answer:

The planets Mercury, Venus, Earth, and Mars, are called terrestrial because they have a compact, rocky surface like Earth's terra firma.

Explanation:

A terrestrial planet, telluric planet, or rocky planet is a planet that is composed primarily of silicate rocks or metals. Within the Solar System, the terrestrial planets are the inner planets closest to the Sun, i.e. Mercury, Venus, Earth, and Mars

The planets Mercury, Venus, Earth, and Mars, are called terrestrial because they have a compact, rocky surface like Earth's terra firma.

The bacteria that does not belong to the group of the other bacteria in the following list is escherichia.

A bacterium, commonly known as bacteria, is a microscopic, single-celled organism that lacks a nucleus and other membrane-bound organelles. They are classified into the Monera kingdom's prokaryotes. The bacterial genome is housed in the nucleoid (a central location containing the chromosome), and they have a well-organized cell structure with a cell wall, ribosomes, and other cellular machinery.

Bacteria are an essential component of life on earth. They are involved in a variety of processes, including the decomposition of organic matter, nitrogen fixation, and the production of antibiotics and other bioactive compounds, among others. Certain bacteria can cause disease, while others are beneficial, making them an important part of human health and medicine.

There are several species of bacteria, such as streptococcus, staphylococcus, lactobacillus, bacillus, and escherichia coli. Of the five species listed, only escherichia does not belong because it is a genus of bacteria, whereas the others are individual species. Streptococcus, Staphylococcus, Lactobacillus, and Bacillus are all separate species. As a result, the correct response is escherichia.

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Answer:

In about 30 days

Explanation:

Assume Xavier sights a full moon today, it'll take around 29.5 days to see the moon at that size again.

Analysing each of the given options, only option D answers the question because 29.5 days can be rightly said to be about 30 days.

Or better still, 29.5 days approximates to 30 days.

Arterioles play a crucial role in the skin when a person is very cold. Arterioles are the tiny blood vessels that regulate blood flow from the arteries to the capillaries and finally to the veins. When a person is very cold, arterioles in the skin constrict, a process known as vasoconstriction, to prevent heat loss.

This constriction reduces the amount of blood that flows through the skin, reducing the skin's temperature. The skin also appears pale during vasoconstriction since less blood is flowing to the skin's surface. The constriction of arterioles helps to conserve heat and prevent heat loss from the skin.

Conversely, when a person's skin is warmed, the arterioles dilate, a process known as vasodilation, allowing more blood to flow through the skin, increasing the skin's temperature and causing the skin to appear red. The dilatation of arterioles helps to dissipate heat and regulate body temperature.

Thus, the regulation of blood flow through arterioles is crucial in regulating the body temperature and preventing heat loss.

In conclusion, arterioles in the skin play a vital role in regulating body temperature by constricting and dilating to control blood flow through the skin.

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Answer:

A logarithmic scale condenses the range of acidity to numbers that are easy to use. Consider a solution with [H + ] = 1.0 × 10 -4 M. That is a hydrogen-ion concentration that is 1000 times higher than the concentration in pure water. The pH of such a solution is 4.00, a difference of just 3 pH units.

Answer:

Phytoplankton

Curstacae

Fish

Dolphine

Killer Whale

This is an example of an aquatic food chain sorry fr the delay

Answer:

Phytoplankton

Curstacae

Fish

Dolphine

Killer Whale

Binding of a signalling molecule to a ligand-gated ion channel receptor, that leads directly to a change in the distribution of ions on opposite sides of the membrane.

Ligand-gated ion channels are also generally referred to as ionotropic receptors, and these are a group of transmembrane ion-channel proteins which are open to allow ions such as K⁺, Ca²⁺, Na⁺ , or Cl⁻ to easily pass through the membrane in order to respond to the binding of chemical messengers (neurotransmitter).

In a ligand-gated ion channel, the substances will be distributed from outside to inside (or vice versa, depending on the type of substances). Ligand-gated ion channels that binds neurotransmitters and open in response to the ligand binding.

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The tripeptide c.) N - proline - phenylalanine - leucine - C would be most likely to be soluble in an organic (hydrophobic) solvent like benzene.


To determine the solubility of these tripeptides in an organic solvent, we need to identify the hydrophobic amino acids in each tripeptide.

a.) Phenylalanine, alanine, and glycine are all nonpolar and hydrophobic.
b.) Leucine and alanine are hydrophobic, but lysine is hydrophilic.
c.) Proline, phenylalanine, and leucine are all hydrophobic.
d.) Arginine and lysine are hydrophilic, while proline is hydrophobic.
e.) Glutamate and aspartate are hydrophilic, while glycine is hydrophobic.

Based on the above information, the correct option is c.) N - proline - phenylalanine - leucine - C
This is because all three amino acids in this tripeptide are hydrophobic, which increases its solubility in an organic solvent.

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First one is chlorophyll, second one is mitochondria.