Answer:
B. Build more gasoline-powered cars
Explanation:
More gas-powered cars will increase fossil fuels, therefore, increasing the greenhouse effect.
Answer: White blood cell
Explanation:
White blood cells also known as leucocytes are the cell type that include lymphocytes, neutrophils, basophils, eosinophils and monocytes. All the classes of white blood cells play vital role in immune response.
Thus, White blood cell is the answer
Biodegradation is the process by which organic substances are naturally broken down by living organisms.
It is the disintegration of organic substances that are broken down by microorganisms. Bacteria, fungi and other microorganisms transform the compounds into simpler substances.
I believe the answer to be B.