What is the most likely effect a decrease of plant life in the biosphere would have on the atmosphere?
a.
a decrease in plant life would have no effect on the atmosphere.
b.
a decrease in plant life would cause carbon dioxide levels to increase and oxygen levels to decrease.
c.
a decrease in plant life would cause carbon dioxide levels to decrease and oxygen levels to increase.
d.
a decrease in plant life would cause an increase in all gases in the atmosphere.

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards. the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote

How much time has elapsed from the very beginning of "the memior of the conquistador bernal diaz del castillo" to the end? a. castillo's whole life b. a quarter of an hour c. a few weeks d. a decade

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a