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allochka39001 [22]
3 years ago
6

Producers are the most important biotic factor in an ecosystemtrue or false?

Biology
1 answer:
bagirrra123 [75]3 years ago
3 0

Answer:

True

Explanation:

Producers are very important for an ecosystem as they trap the solar energy received from sun through the process of photosynthesis in order to produce food for consumers. This food when consumed by other organisms leads to flow of energy from one organism to other which lie at different trophic levels of a food chain.

Producers lie at the base of an energy pyramid and thus are the initiators of the food chains.

If there would have been no producers, there would have been no food cycle/chains and thus no flow of energy and and hence no stable ecosystem.

Being extremely important for the ecosystem , producers are living being such as trees, plants, algae etc. and thus they are the  most important biotic factor in an ecosystem

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Answer:

The three-chambered hearts of amphibians and nonbird reptiles are facultative, allowing variation in blood flow through the heart.

Explanation:

In Anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.

Generally, the cardiac cycle occurs in two (2) stages;

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II. Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.

All amphibians and reptiles except for crocodiles (having four-chambered heart) have three-chambered hearts, which typically comprises of a partially divided ventricle and two atria.

Hence, the correct statement about the three-chambered hearts of amphibians and nonbird reptiles is that, the three-chambered hearts of amphibians and nonbird reptiles are facultative, allowing variation in blood flow through the heart due to the partially divided ventricle.

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