Climax communities __________________communities that are undergoing primary succession.

Fluctuations in the phosphorus cycle in aquatic ecosystems _______.

Competitive athletes train at __________ of estimated maximal heart rate.

Foodborne illnesses typically result primarily in ________ signs and symptoms.

According to ernest hilgard, hypnosis is the result of __________.

The order ___________ is responsible for vectoring trench fever.

Gametophytes reproduce ______.

Basidia produce spores by a process known as _____.

Large clusters of lymph nodes occur in all of the following locations except the ________.

In addition to storage and mechanical breakdown of food, the stomach ________.

Hormones or paracrines that inhibit gastric secretion include ________.