Carbon Dioxide is produced as cells break down nutrients for energy, which pairs of syst
would participate in removing the carbon dioxide from the body?
bodys they mall intestine absorbs mat of the nutrients in the body ?

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.

How do you transfer mrna into codons ? i'm so confused : (

When you run, you begin to breathe heavier and faster. your heart beats more quickly, bringing more oxygen to your cells. which organ systems are working together here?