Epithelial tissues can be classified as simple or stratified based on the number of layers of cells in the tissue. Why do you often find simple epithelial tissues in areas where diffusion often occurs?

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.

Which enzymes break down carbohydrates?

All organisms contribute some water to the water cycle by conducting