PLSSS HELP GIVING BRAINLIEST Which three actions can harm the stability of an ecosystem? A. Applying a lot of fertilizer on a farm B. Introducing a new species on purpose C. Using fewer pesticides on a farm D. Cutting down all the trees in a forest​

The diagram illustrates the activity of vesicles during a cellular process.

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

Atest cross can be used to -predict the phenotypes of a monohybrid cross -predict an unknown genotype of a purebred dominant plant -cross-breed dominant and recessive plants -give probabilities that a trait will appear