Answer - Genetic Engineering (Confidently Correct)
Reason - With Technology we can change the genetics of a species and help it adapt to it env. to survive longer and reproduce.
The answer should be the third option "number of protons and neutrons." The atomic mass of a element is equal to the amount of protons, and neutrons added together in that element. So for example if we are trying to find the atomic mass of hydrogen you would add the total amount of protons and neutrons together to find it's mass although it doesn't equal the exact amount of it's mass but it's close.
Hope this helps.
If you’re talking about too many people I’m guessing the limitation factors would be lack of resources and that would include lack of food and space.
The endocrine system is made of glands that secrete hormones. These hormones help regulate the organs and cells activity. The hormones among other things control your metabolism.
