Answer:
For example, a forest of trees and undergrowth plants, inhabited by animals and rooted in soil containing bacteria and fungi, constitutes a biological community. A brief treatment of biological communities follows. ... The various species in a community each occupy their own ecological niche.
About 93 million miles or 150 km or 8 light minutes (don't know what that means)
The correct answer is absence of jaws.
Lampreys and hagfish are in the class Agnatha, they are jaw-less fish. The members of the agantha class are probably the earliest vertebrates. Scientists have found fossils of agnathan species from the late Cambrian period that occurred 500 million years ago.
C. The material for it is super expensive and sometimes fragile, which sucks, but it's true.
The correct answer is A buildup of lactic acid in the tissues I think. I hope this helped dear:)
