Natural selection
Tornado
Loss of food or water
Hurricane
B. Nucleus (because the nucleus is to the organelles, like the brain to our organs).
Bug spray, bed covers, medicine and stay away from areas that carry malaria
Hihi!
The answer would be 2) Plenty of food! If you have plenty of food then the likely hood for more of the population to live would increase, the rest of the causes would cause decrease in the population!
I hope I helped!
-Jailbaitasmr
Answer:
The scientific investigation is the systematic approach of the scientists to answer the questions about the world. It is applied almost all of the theories including the Theory of Natural Selection. Darwin's theory of evolution is a result of scientific investigation. In this theory, they investigate by observing the distribution of species.
