Which phrase best describes dna?
a.
the structure that allows biochemical reactions to occur
b.
the structure that translates information into action
c.
the molecule that contains all the genetic material
d.
the molecule that breaks down sugars in the cell

In a certain ecosystem owls are predators for mice. the owl population increases and they eat more mice this causes the mouse population to decrease what happens next? a. the birth of mice increases. b. the birth rate of owls increases c. the population of owls decreases d. the population of mice increases

Which of the following sex and generation combinations directly produces the pollen tube of angiosperms? a) male gametophyteb) female gametophytec) male sporophyted) female sporophyte

What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences