What group of organisms plays the largest role in moving nitrogen between the atmosphere and plants

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.

Can someone give me the answer to this question? you so much

Explain in your own words what caused pangea to separate and why we don't worry about earthquakes in florida.