In a California kelp forest, the garibaldi, the purple sea urchins, and the rocks make up whic of the following? Select all that apply. a population

part of a community

part of an ecosystem

Which are observations about the tree on the right ,? check all that apply

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.

What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele