Definite article is used before a noun (person place or thing) to indicate that the identity of the noun is known to the reader.
indefinite article is used before a noun that is general or when its identity is not known.
I think the answer is c but I looked it up and got this: system or thing used as an example to follow or imitate.
Answer:
B. Whale!
Explanation:
Snail, crawfish, and lily's all live in freshwater.
While D makes no sense water doesn't live anywhere.
Thanks for letting me help!!
The symbiotic relationship in which both participating parties benefit is called mutualism. When one organism benefits and the other organism is harmed it is called<span> parasitism.</span>
The answer is because biology is easy and they're known around the world.