Adding an organism to a food chain does not affect the other members of the food chain, but removing an organism does. true or false?

Indicate whether the following statements about the biases in the fossil record are true or false. a) inland species are more likely to be preserved than marine species b) organisms with hard body parts are more likely to be preserved than are those composed soft tissues. c) species that existed over a larger area are more likely to be preserved than species existing over a smaller area. d) organisms that lived very long ago are more likely to be found as fossils than organisms that lived relatively recently e) the fossils of larger organisms are more likely to be found than the fossils of smaller organisms

Environmental impacts on evolution : mastery test

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?