I. Toxicity Threshold II. Bioaccumulation III. Biomagnification IV. Carcinogens V. Teratogens A. Chemicals that cause or support cancer B. Substances that cause mutations and birth defects C. The dose of a chemical above which there is a measurable decline in the health measure D. The process by which chemicals are stored in the tissues of living organisms E. Concentrations of a chemical increase at each higher level of the food web

What are genotypes? what are phenotypes?

Adoctor is trying to diagnose a patient with dry skin. which of the following resources would be the most ? a magazine ad about soft skin a growth chart online articles about dry skin medical books

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?