Which is the best example of a response to an external stimulus?

drinking water after a long run

avoiding the sun by looking for food at night

a hungry bear hunting for food

falling asleep in the treetops of a forest

Plant species X lives in a hot, dry environment. Slowly, over hundreds of years, the climate becomes wetter. Fungi attack species X and cause the population of species X to decrease.

Which structure (s) is/are primarily responsible for the release of catecholamines?

What is the process of moving the body part around a central axis

Based on act 1, scene 1 which is not part of walter lee's american dream? Living in the family's current apartment Working as a businessman having material wealth owning a large home Which of the following terms are examples of colloguialisms in act

What is the main function of ribosomes? produce DNA destroy worn out organelles synthesize proteins

How does the dna repair enzyme photolyase prevent skin cancer?

How does the body of a runner keep up with the demand for energy when cellular oxygen levels are low? through anaerobic respiration in the cytoplasm through ATP produced directly from sunlight through aerobic respiration in the plasma membrane

How would you make 2.5 liters of an aqueous solution containing 150mM Tris (the MW of Tris is 120g/mole) ? (Hint: Do the necessary calculations AND then describe how the solution would be made.)

Where is the ginkgo tree found?

In general, what is not affected by the ingestion of caffeine? a. behavioral consequences of alcohol intoxication b. the risk of cardiovascular disease c. the time it takes to fall asleep d. performance of boring or repetitive tasks