Answer:
D Natural selection
Explanation:
This is because the dominant Gene according to Charles Darwin is strong enough to adapt to any environment.Making it a survival of the fittest
B. thick atmosphere
You can also use quizlet to look up answers also, I'm in college and they have never failed me.
Hypotheses must be provable. If scientists cannot prove a "hypothesis" right or wrong, they need to change it to a legitimate hypothesis - something you can prove.
If it is proven wrong, they can change certain aspects of it to make a more specific experiment.
The X symbol looks too much like the multiplication symbol, it also makes using it as a variable more confusing.
