Which component of Earth’s atmosphere is decreased due to photosynthesis? ozone oxygen hydrogen peroxide carbon dioxide

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.

As a small change in a person's dna can cause a genetic disorder

What type of weather does tropical continental air bring in summer? hot and cloudy cool and sunny hot and sunny cool and cloudy