A group of students measured a twenty-foot stretch of a river ccosystem and recorded observations, Which statement is a testable hypothesis related to the scenario? o Watcr is an abiotic component in the river ccosystem 0 If the frogs anc startled, then they will jump into thc water The frogs living in the pond represent a population

b - the respond is innate and varies over time.

good luck!

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.