In cells hydrogen peroxide is converted to water and oxygen throughout the activity of
a. enzymes
b. fats
c. lipases
d. pigments

Which of the following statements is true? a. the main cause for speciation is an increase in gene flow. b. organisms that reproduce asexually are not considered part of a species. c. on a tree of life diagram, speciation is shown by the merging of two different lineages. d.the size of the geographic area inhabited by a population can cause speciation.

There are six elements that make up most of the human body. which of the following is not one of these six elements?

An animal cell (left) and a plant cell (right) are shown.which organelle, labeled x in the diagram, is found in both plant and animal cells?