What is the appropriate order of the stages of investigating whether maple trees drop their leaves in the autumn because of colder days? (1) Maple trees are grown in two greenhouses where the only variable is temperature (15°C vs. 10°C). (2) The hypothesis is rejected. (3) There is no statistical difference in the number of leaves dropped at 10°C as compared to 15°C. (4) The observation is that maple trees drop their leaves in autumn. (5) The hypothesis is that maple trees drop their leaves because of colder temperatures.

The transmitter affected by cholinergic drugs is __________.

Emetics __________, while anti-emetics __________.

The antidote for anti-cholinesterase drugs is a(n) __________.

In general, water use worldwide is dominated by

The greenhouse effect refers to

The 2 types of adrenergics are catecholamines and non-catecholamines.

The largest source of oil for the United States is currently

Which laxative softens the stool?

Which pancreatic cell produces glucagon?