C.) D<span>iscontinue the use of irrigation systems</span>
Due to the overproduction of offspring with only finite resources, species begin to engage in competition for survival. In order to increase their chance of survival, certain species will begin to develop genetic variations that allow them survival advantages.
The answer is fixed interval
I hope that helped
<span>The best
medicine for the constriction of the vessels rod from brain is caffeine.
Caffeine can be found in various foods and drinks such as coffee,
cocoa, cappuccino, frappuccino, soft/energy drinks, chocolate/energy
bars, cough syrup, and other medications.
Answer: Caffeine</span>