Answer:
Carbon dioxide is added to the atmosphere by human activities. When hydrocarbon fuels (i.e. wood, coal, natural gas, gasoline, and oil) are burned, carbon dioxide is released. During combustion or burning, carbon from fossil fuels combines with oxygen in the air to form carbon dioxide and water vapor.
Explanation:
Your welcome easy.
Answer:
Because it has a darker pigment?
Explanation:
A. Fewer valence electrons
Valence electrons are electrons that are held most loosely in the outermost shell.
The answer is A: Between 50 and 5,000 amino acids
