Which measurement of length is the smallest?
a. 9*10^–6 m
b. 7*10^–5 m
c. 7*10^1 m
d. 9*10^2 m

An ecologist is studying the effects that a population of predators is having on a population of a prey. he used data from the field to produce this graph. which conclusion can draw from the graph?

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat