In any population there will be variations of certain characteristics. for example, in the giraffe population there is a variation in neck lengths among individuals. some have longer necks and some have shorter necks. which of these events would the giraffes with the longer necks have the best chance of surviving?
a) loggers come in a chop down all of the trees
b) insects can only eat the highest leaves due to the canopy
c) a plant disease infects the trees, resulting in total leaf death.
d) monkeys swarm in and tear off all of the lower leaves to use for shelters

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

What is the surface temperature of the ocean where hurricanes form? greater than 80 celsius approximately 27 celsius at least 76 celsius less than 10.5 celsius

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous