Answer:
The process autotrophs (plants) use to create food. they convert CO2 (Carbon Dioxide) and H2O (Water) into O2 (Oxygen) and glucose (sugar).
Answer:
here is ur answer
Explanation:
The control group is defined as the group in an experiment or study that does not receive treatment by the researchers and is then used as a benchmark to measure how the other tested subjects do.
It decreased because of the Black Plague
