Answer:
Abiotic Factor- Non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems. Biotic: worms, algae, bacteria, cattails, alligators, deer, frogs, insects, crocodiles, snakes and fish. Abiotic: soil, sun, water, rocks, air and bedrock.
The correct answer is option B. Devonian.
The amphibians are the tetrapods (having four limbs), which can live in both water and land, but for reproduction purpose, they need water and early life is exclusively aquatic. The amphibians are known to be evolved from lobbed finned fishes around 370 million years ago in the Devonian period of the Paleozoic Era.
<span>A group of cnidarians that provide food and shelter for many kinds of animals are the ( </span>D. Corals )
