The earth would be much better off if greenhouse gases did not exist.
a. true
b. false

Why is it important to study each branch of earth science?

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.

Carbon compound that stores and transmits genetic information is called