Answer:
B. A set of moving sections of lithosphere
If you happen to have an X and Y chromosome, you are biologically classified as male. Testosterone will begin to be produced in puberty, and facial hair will begin to grow, and so on.
Answer: The percentage of unknown material has grown in scientists estimates since the 1970’s; the percentage of dark matter has shrunk in scientists estimates since the 1980s
Explanation:
Decomposer, they eat dead organic material