The correct answer is A because G and C work together, and T and A work together, except A turns into U when transferring to mRNA.
An interaction wherein both species are harmed is called competition. They are competing for nutrient/habitat.
The answer with the 2 pots of the same size: one with 2 pounds of potting soil, one with 2 pounds of dirt, 2 tomato plants of different sizes and the same type
The only correct answer in this case is B - a stroke.
None of the other answers could be counted as correct here.
While A - a heart attack is conceptualy similar, when we're talking about a heart attack, we're talking about not enough oxygen that gets delivered to the heart - because something is blocking it.
C - hypertension on the other hand means someone has a higher blood pressure than is usual for a regular human being, which puts more strain on his cardiovascualr system.
and D - atherosclerosis doesn't come even close to be correct :)
