Brainliesttt asap! which of the following steps is not likely to take place during cellular respiration? oxygen combines with carbon of simple sugar. energy molecule transfers energy to cells. simple sugar breaks down. energy is used up.

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.

The cluster of developing cells from conception until birth is called an

Which of the following is not associated with invasive species?