Answer:
a variable (often denoted by x ) whose variation does not depend on that of another.
Explanation:
Answer: all of the above
Explanation:
Plants and animals must be able to adapt to their surroundings, because otherwise they could be in danger because of a simple change weather patterns or different predators roaming around. They will also have possible competition.
Setting for what you wanna do or be and try to achieve your goal try hard.