This complexity of cell processes is attributed to the fact that D. Eukaryotes have specialized membrane bound organelles, in all of their specialized cells, to position or separate biochemical processes to certain environments within the cell.
I’m guessing it’s probably A or C
(D)an atom can join with other kinds of atoms.
Basically he explained what a molecule is.
A burn is damage to your body's tissues caused by heat, chemicals, electricity, sunlight, or radiation. Scalds from hot liquids and steam, building fires and flammable liquids and gases are the most common causes of burns. Another kind is an inhalation injury, caused by breathing smoke.
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B. They are determined by I, AB, A, or B