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3 years ago

Describe what the completeness or integrity of an ecosystem biodiversity is used to measure

Biology

1 answer:

Scorpion4ik [409]3 years ago

8 0

Answer:

Disruptions to any physical or biological component of an ecosystem can lead to shifts in all its populations. Biodiversity describes the variety of species found in Earth`s terrestrial and oceanic ecosystems. The completeness or integrity of an ecosystem`s biodiversity is often used as a measure of its health.

Explanation: Disruptions can really mess with any physical or biological component of a ecosystem then that ecosystem leads to shifts in all populations. I hope this answer helps you!

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In C4 plants such as corn and sugarcane, carbon fixation takes place in the _________ cells, and then the CO2 is transferred as

Zarrin [17]

Answer:

Mesophyll and bundle sheath cell.

Explanation:

C4 pathway is also known as hatch slack pathway it is a photosynthetic process in some plants. In this pathway carbon is extracting from carbon dioxide to able to use in sugar and other biomolecules. C4 is known as four carbon molecules which is the 1st product of this type of carbon fixation.

In this pathway rubisco enzyme works in the environment where lots of carbon dioxide and very little oxygen present. CO2 is transferred via malate or aspartate from mesophyll cells to bundle sheath cells. In bundle sheath cell CO2 is released by malate decarboxylation.

C4 plants use PEP carboxylase to absorb more amount of CO2 in the mesophyll cells. Phosphophenolpyruvate (PEP) which is 3 carbon molecule binds with CO2 and make oxaloacetic acid, it forms than malate, 4carbon molecule. Malate enters through a plasmodesmata into bundle sheath cell and release the CO2.

5 0

3 years ago

How has dna sequencing affected the science of classifying organisms?

nlexa [21]

Dna has effected the scientist by clasfiying the organnisms. it causes the organisms and dna to get mixed up and be a mixed up organism. a scientist could be getting the wrong answer if it was actually dna.

5 0

4 years ago

Help if good at earth science/ space pls!!

alukav5142 [94]

Answer:

1. The proportion of the universe's galaxies that can be seen from Earth is approximately 10 per cent (option a).

2. The model of galaxy formation in which sections of gas clouds collapse into small pieces which repeatedly combine into larger pieces under the influence of gravity is called the SZ model or the bottom-up model.

3. Most stars are not destroyed in a galaxy collision because galaxies move too slowly for that kind of damage (option c).

4. It is estimated that the galaxies in the universe have evolved since about 13.8 billion years ago, just after the universe first formed (option b).

Explanation:

1. What we can see of the universe is due to distant stellar objects, whose light has reached us. Current estimates indicate that there may be as many as 2 billion galaxies in the entire universe, many of which are not visible.

Using the "Hubble" space telescope would only allow the observation of 200 billion galaxies and study their composition, which represents about 10 per cent of existing galaxies.

In the future, through the use of more powerful and higher resolution telescopes, it would be possible to observe galaxies that cannot be studied so far.

2. Leonard Searle and Robert Zinn proposed, in 1978, a model for the formation of galaxies, in which small units -globular clusters- associated with each other to progressively form larger components.

Globular clusters are the product of the collapse that occurred before galaxies began to form, and are capable of uniting under the effect of gravity to form larger clusters and thus form the galaxy. The name "bottom up" is due to the fact that small elements form larger ones. Likewise, the name "SZ" results from the initials of the scientists who proposed it.

3. Galaxy collisions are a form of gravity-dependent interaction between galaxies, with one having an effect on the other.

The result of the collision of two galaxies, in general, is the fusion of both, where the larger one is capable of absorbing the smaller one .without this involving the destruction of stars- since the movement of the colliding galaxies is very slow.

4. The formation of galaxies has a calculated time of about 13.8 trillion years, about 500 or 600 million years after the Big Bang.

It is believed that the origin of galaxies reside in the gravitational instability induced primitive fluctuations, leading to the formation of dense units from the scattered gases. This condensation of gases is called clusters or superclusters, and galaxies may have formed from them.

3 0

4 years ago

Which of the following structures is part of the peripheral nervous system?

Nady [450]

Answer:

a. Cranial and spinal nerves

Explanation: is correct

4 0

3 years ago

Anyone help please need answer immediately

Artemon [7]

Answer:

1. It's difficult to find out if someone is blood doping because the body has red blood cells. First the doctors get blood samples. Because the body constantly produces new blood, the blood that was stored shows that it is old with the blood samples it shows that there are some new and some old blood cells, which is how you can tell if they are doping.

2. Hemoglobin is a protein that is produced by the body that carries oxygen in the red blood cells the more red blood cells the more hemoglobin you have. Ex; If the athletes have a high level of hemoglobin on the day of the race than it had been days or weeks before, to shows that the athlete was blood doping.

3. It can help the body produce more blood cells to carry more oxygen (get more energy) and the body can get used to that kind of high altitudes and climates. Which leads to you getting even more energy at lower altitude levels.

3 0

3 years ago