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Natalka [10]
2 years ago
13

Which statement best describes a keystone species?

Biology
2 answers:
worty [1.4K]2 years ago
8 0

The correct answer is option d. its absence would affect many organism present in the community.

The keystone species are the one, who play a very important role in the ecosystem. In case, the keystone species is wiped off from a particular ecosystem, then  the function of the ecosystem would cease and lead to a major effect. Hence, the keystone species is very important for the survival of ecosystem.

Tpy6a [65]2 years ago
4 0

The answer is D. The definition of keystone species is a species on which other species in an ecosystem largely depend, such that if it were removed, the ecosystem would change drastically.

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Answer: Beginning from the inside and moving towards outside the sun has six layers. Sun is the ultimate source of energy for all the living organisms on earth. The heat and light that comes out of the sun is through the various layers that is present in the sun.

1. Innermost core: It is the region from where the sun gets all the energy. Here hydrogen and helium is present. Due to high pressure of the surrounding layers hydrogen fuses into helium releasing high energy photons.

2. Radiative zone: The high energy photons are now transferred from core to radiative zone. Here the high energy photons are constantly absorbed and re-emitted. It takes millions and billions of years for these high energy particles to come out of this radiative zone.

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7 0
2 years ago
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Answer:

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Basically an hype tonic blood has high solute potential,( low water potential)  compare with  the surrounding  plasma  and the interstitial fluid. Thus the interstitial fluid is hypotonic to the blood.

Consequently,water with higher potential moves   from the interstitial fluid medium into the blood by osmosis through the capillary endothelial. This raises the water potential of the blood, lowering the solute potential, thus making it hypotonic to the interstitial fluid; which is now hypertonic(lower water potential ,due to loss to the blood by osmosis).

Since the interstitial fluids is now hyper tonic to the surrounding cells, water moves from the hypo tonic surrounding cells through osmosis into the interstitial fluids. The sequence continues until a stable internal environment is achieved,

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Answer:

c  less land available for growing crops

Explanation:

if we use the land for parking lots there will be lees room for farming

there for there will be less food

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63 grams is the correct answer

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