How were life forms affected by the rise in atmospheric oxygen levels that began 2.2 billion years ago?

What is an acquired trait?

Mitochondrial DNA accumulates DNA mutations quickly. Because of this, it would be most beneficial in analyzing the ancestral relationship of organisms that are A. Mitochondrial DNA is beneficial in both of these cases B. Distantly related C.

Which of the following refers to an organism's ability to maintain constant conditions within its body? a. metabolism b. homeostasis c. stimuli d. sexuality

Fill in the word that completes each sentence. In the mitochondrion, small molecules combine with to produce and carbon dioxide. This process releases a large amount of. Energy, oxygen, or water

What type of erosin is it when earth worms are pushing the soil apart

In the following example, what is the independent variable? Hypothesis: Mice receiving Drug-A will pass through a maze faster than mice receiving a water placebo.

You've seen two hbs molecules stuck to each other. imagine a third one randomly bouncing up to them. how could it get stuck on?

Which scientist first said that planets travel in fixed paths or orbits A) Kepler B) Ptolemy C) Galileo D) Copernicus

Describe the process of inhalation

In a Venn diagram, the separate circles contain characteristics unique to each item being compared, and the intersection contains characteristics that are common to both items being compared.