In an experiment, as the heat increased, so did the rate of respiration until 20 degrees Celsius. As the heat increased past 20 degrees Celsius, the rate of
respiration began to fall and eventually stopped. Which of the following is the
most likely explanation?

Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u.s. and mexico. the st. lawrence seaway provides an important trading route for the u.s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

Identify the examples in which sam interacts only with natural resources

Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine