do you believe humans are responsible for global warning or do you believe this is part of a natural cycle of earth like periodic ice age?

When species lose their habitats they may..

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

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?