What contribution did the author’s use of dialogue in the story?
a. it breaks up the paragraphs and makes reading the story easier.
b. it allows the reader to better understand the characters.
c. it provides a break from the narrative technique.

Photosynthesis converts solar energy into what type of energy?

According to the big bang theory, after the "bang," the universe remained dark until about  300,000 yearsone billion yearsthree minutesthree billion years  later, when neutral atoms began to form.

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population. b) the separated population is small, and genetic drift occurs. c) the isolated population is exposed to different selection pressures than the ancestral population. d) different mutations begin to distinguish the gene pools of the separated populations. e) gene flow between the two populations is extensive.