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Degger [83]
3 years ago
6

The number or variety of species found in a particular area is called

Biology
1 answer:
ASHA 777 [7]3 years ago
8 0

Answer;

Species diversity

Species diversity  is the umber of variety of species in the world or in a particular region.

Explanation;

-Species diversity is the number of different species that are represented in a given community.

-Species diversity is measured based on two main factors, which are; richness and evenness. Richness is a measure of the number of different kinds of organisms present in a particular area. For instance, species richness is the number of different species present. Evenness on the other hand, compares the similarity of the population size of each of the species present.

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What is the scientific name for venus flytrap
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Dionaea muscipula, is the scientific name for Venus flytrap
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choose five body systems that are involved in maintaining homeostasis in your body as you answer these assessment questions. Exp
gayaneshka [121]

Answer:

Explanation:

Water Levels

For example, the cardiovascular, urinary, and lymphatic systems all help the body control water balance. The cardiovascular and lymphatic systems transport fluids throughout the body and help sense both solute and water levels and regulate pressure. If the water level gets too high, the urinary system produces more dilute urine (urine with a higher water content) to help eliminate the excess water. If the water level gets too low, more concentrated urine is produced so that water is conserved.

Internal Temperatures

Similarly, the cardiovascular, integumentary (skin and associated structures), respiratory, and muscular systems work together to help the body maintain a stable internal temperature. If body temperature rises, blood vessels in the skin dilate, allowing more blood to flow near the skin’s surface. This allows heat to dissipate through the skin and into the surrounding air. The skin may also produce sweat if the body gets too hot; when the sweat evaporates, it helps to cool the body. Rapid breathing can also help the body eliminate excess heat. Together, these responses to increased body temperature explain why you sweat, pant, and become red in the face when you exercise hard. (Heavy breathing during exercise is also one way the body gets more oxygen to your muscles, and gets rid of the extra carbon dioxide produced by the muscles.)

Conversely, if your body is too cold, blood vessels in the skin contract, and blood flow to the extremities (arms and legs) slows. Muscles contract and relax rapidly, which generates heat to keep you warm. The hair on your skin rises, trapping more air, which is a good insulator, near your skin. These responses to decreased body temperature explain why you shiver, get “goose bumps,” and have cold, pale extremities when you are cold.

Homeostasis of Ions

Body functions such as regulation of the heartbeat, contraction of muscles, activation of enzymes, and cellular communication require tightly regulated calcium levels. Normally, we get a lot of calcium from our diet. The small intestine absorbs calcium from digested food.

The endocrine system is the control center for regulating blood calcium homeostasis. The parathyroid and thyroid glands contain receptors that respond to levels of calcium in the blood. In this feedback system, blood calcium level is the variable, because it changes in response to the environment. Changes in blood calcium level have the following effects:

When blood calcium is low, the parathyroid gland secretes parathyroid hormone. This hormone causes effector organs (the kidneys and bones) to respond to increase calcium levels. The kidneys prevent calcium from being excreted in the urine. Osteoclasts in bones reabsorb bone tissue and release calcium.

When blood calcium levels are high, the thyroid gland releases calcitonin. Calcitonin causes the kidneys to reabsorb less calcium from the filtrate, allowing excess calcium to be removed from the body in urine. Calcitonin also suppresses the formation of active vitamin D in the kidneys; without vitamin D the small intestines don’t absorb as much dietary calcium. Osteoblasts, stimulated by calcitonin, use calcium in the blood to add to bone tissue.

4 0
2 years ago
Which organisms represent the most biomass in anWhich of the following is a natural source of carbon emissions? ecosystem?
Cloud [144]

Answer:

Answer 1: <em>Producers</em> represent the most biomass in an ecosystem.

Answer 2: <em>Human and animal respiration, decomposition and volcanic eruptions</em> are natural sources of carbon emissions.

Explanation:

Answer 1: <em>Producers</em> represent the most biomass in an ecosystem.

Producers refer to plants, trees, shrubs, etc., that make up the first trophic level of an ecosystem. Producers are vital to ecosystems as they produce food for themselves as well as primary consumers.  Producers represent the most biomass in an ecosystem as they are the first trophic level in an ecosystem. As we go up trophic levels in an ecosystem, only 10% of energy as biomass is passed on to the next trophic level. Thus, producers represent the most biomass in an ecosystem.

Answer 2: <em>Human and animal respiration, decomposition and volcanic eruptions</em><em> </em>are natural sources of carbon emissions.

Respiration is a natural source of carbon emissions as, when humans and animals exhale, they release carbon dioxide and water vapor in the atmosphere. Similarly, when plants and animals die and decompose (decay), carbon dioxide is released in the atmosphere as part of the decomposition process. Thirdly, volcanic eruptions are also a significant form of carbon emissions as annually, 200 million tonnes of carbon dioxide is released from the earth's interior when volcanoes erupt. In this way, human and animal respiration, decomposition and volcanic eruptions are natural sources of carbon emissions.

7 0
3 years ago
We can test the relative permeability of a phospholipid bilayer by using a synthetic membrane that does not contain any protein
Deffense [45]

Answer:

Glucose.

Explanation:

The cell membrane is made up of lipid bilayer and proteins are embedded or may span the lipid bilayer. The carbohydrates are present in association with lipids and proteins.

The artificial membrane has been prepared that are free from proteins. Small uncharged particles may easily diffuse through the membrane. Among the given molecules in the question water is the smallest molecule and diffuse out first through the plasma membrane. Ethanol is 2 carbon compound and diffuse after water than glycerol diffuses as it is a 3 carbon compound. Glucose is the largest molecule and diffuse last through the plasma membrane.

Thus, the correct answer is option (A).

4 0
3 years ago
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