Answer:
The Amazon is a critical absorber of carbon of carbon dioxide, a greenhouse gas produced by burning fossil fuels, like oil and coal. ... The Amazon absorbs 2 billion tons of CO2 per year (or 5% of annual emissions), making it a vital part of preventing climate change.
Explanation:
B is your answer hope it helps
Answer: Option D) neurotransmitters
Explanation:
Neurotransmitters are secreted from the terminal of a neuron and bound by a specific receptor protein in the next neuron. They exists within the neurons of the brain, and NEVER come in contact with blood.
Examples include acetylcholine, glutamate, glycine etc.
Answer: The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
The answer to this question is B