Please help just 3&4-environmental science

If you are in a chronic state of anxiety but also suffer from moment of sudden, intense fear you are problably suffering. from

Construct an explanation about the function of mitosis for multicellular organisms

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.