Anonnative species of fish is introduced into a lake. which situation would most likely prevent this fish from becoming an invasive species? a. the nonnative fish has no predators in the lake ecosystem. b. there is a native species that competes with the nonnative fish. c. there are no large native fish living in the lake ecosystem. d. the nonnative fish can tolerate the lake's temperature.

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z

Whenever diploid populations are in hardy-weinberg equilibrium at a particular locus a) the allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change. b) natural selection, gene flow, and genetic drift are acting equally to change an allele's frequency. c) this means that, at this locus, two alleles are present in equal proportions. d) the population itself is not evolving, but individuals within the population may be evolving.

The picture below shows two galaxies. spiral galaxy and elliptical galaxy which of these statements best describes a similarity between the two galaxies? (2 points) both have elongated centers. both have centers shaped like bars. both change their shape from time to time. both are held together by gravitational forces.