C: It contains 11 protons. Atomic number is like another name for protons.
Answer:
<em>Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities. </em>
Answer:
Why do we need active transport?
Moving Against a Gradient
Small substances constantly pass through plasma membranes. Active transport maintains concentrations of ions and other substances that living cells require in the face of these passive movements. A cell may spend much of its metabolic energy supply maintaining these processes.
Explanation:
Hope That helped
Nitrogen fixation.
Nitrogen fixing prokaryotes within the soil assimilate N2 to NH3.
