The explosive chemical nitroglycerine is also a drug given to dilate the blood vessels of patients suffering from arteriosclerosis. which of the following effects will nitroglycerine produce on these patients? (a) reduced heart rate (b) increased heart rate (c) reduced blood pressure (d) increased blood my guess would be (c), you in advance.

The correct answer is (C) Reduced Blood Pressure.

Nitroglycerin is a drug given to dilate blood vessels when they narrow due to diseases as Arteriosclerosis.
Nitroglycerin will widen the arteries to make it easier for the blood to reach the heart, therefor making it easier for the latter to function properly. 

answer; i believe its (ovulation);

if the hares very faster than they are now, and thus the lynx's hunting success rate drops because it will be harder to catch them, the rate that will change will be the pray-rate. the pray-rate will change because more hares will be able to survive, thus more individuals for reproduction, so the end result will be increasing population of hares.

the predator-rate will remain pretty much the same because there will be more than enough pray, but the hunting success rate is stagnant.