Which of the following is an example of the changes that take place in an ecosystem during secondary succession?

a. algae, grasses, and small plants grow on newly exposed rock over a long period of time.
b. organisms compete for resources, and those that are best fit to survive establish themselves as dominant species.
c. predation causes a population of prey to migrate to a new location in order to survive.
d. shrubs and trees regrow quickly in an area that has been burned during a forest fire.

Which of the following matches the organisms described with the correct domain? a. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycanb. archaea--multicellular, eukaryotic organisms that do not have cell wallsc. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sourcesd. bacteria--unicellular, eukaryotic organisms that always lack cell walls

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?

What are characteristics of minerals? select 3 choices