Oxygen will actually kill some prokaryotes, like , even if exposed for a short length of time. obligate anaerobes facultative aerobes obligate aerobes aerotolerant organisms

According to the big bang theory, after the "bang," the universe remained dark until about  300,000 yearsone billion yearsthree minutesthree billion years  later, when neutral atoms began to form.

Which of the following is an advantage of solar energy?

Environmental impacts on evolution : mastery test