I think it is A because deforestation happens when toxins start polluting and eroding the forest. destruction lack oxygen and erosion is a big part of deforestation.
Experimental design means planning a set of procedures to investigate a relationship between variables. To design a controlled experiment, you need: A testable hypothesis. At least one independent variable that can be precisely manipulated. At least one dependent variable that can be precisely measured
Answer:
the tendency of DNA sequences that are close together on a chromosome to be inherited together during the meiosis phase of sexual reproduction.