Which statement correctly describes the effect of abiotic factors on population density? A. A change in abiotic factors always decreases the size of a population.
B. A change in abiotic factors always increases the size of a population.
C. A change in abiotic factors never impacts the size of a population.
D. A change in abiotic factors may increase or decrease the size of a population.

The rate at which molecules water and oxygen can enter a cell is determined by the-

How does the study of genetic disorders such as pku biologists understand normal alleles?

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.