Before pasteur's experiments with beef broth and s-shaped tubing, what did
people think about cells?
o
a. cells came from preexisting cells.
b. all cells are eukaryotes.
o
c. all cells are prokaryotes.
d. cells came from nonliving things.

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

Identify characteristics of energy from the sun. check all that apply. almost all of the energy on earth comes from the sun. energy from the sun is known as mechanical energy. the energy in fossil fuels originally came from the sun. plants convert the energy of sunlight into chemical energy.

Asegment of dna that codes for rna and a protein is a