100% correct answers only i cannot retake this.

darwin hypothesized that there are definite steps to natural selection. consider the model of bacterial resistance to antibiotics. how would darwin explain step i?

a. bacteria adapt to environmental changes.

b. in any population, genetic variation exists.

c. in any population, some individuals are weaker than others.

d. some bacteria alter their dna in a response to environmental changes.

Which of the following represents a negatively charged ion? of t 7

Which process is involved in growing crops? irrigation transportation recreation condensation

List two new traits (structural or behavioral) that each new species of rat might demonstrate as it adapts to the conditions on two of the four islands. choose only two islands that are described in the lesson. record the island latter and the major habitat feature of the island. then list two new traits each rat subspecies might demonstrate in order to survive the habitat on that island. note: new traits should be unique to that island and be in response to that island’s habitat feature. i cannot remember islands that were names in the lesson so only answer if you have done the lesson (5.13 life science 7b) choose 2 of the islands and describe a structural and a behavioral trait for a rat on each island so 4 total answers, 2 different structurals and 2 different behaviorals, one for each rat for each island