Which of these compounds are not a source of nitrogen for plants?

A. Ammonia

B. Proteins

C. Nitrates

D. Nitrites

In regulation by repressiona. a sugar, such as lactose, acts as an inducer and combines with the repressor to prevent transcription. b. an amino acid activates the repressor so that the repressor binds to the operator and prevents transcription. c.

What would happen if a plague killed most of the prey organisms within a once-healthy ecosystem?

Two oval shaped tissues at the back of the throat that prevent infection by trapping pathogens that enter the nose and the mouth.

True or false: Fossil Fuels are formed underground from decomposing organisms

What might happen in a tropical rain forest biome if the area received very little rain for an extended period of time

Do plants provide an important contribution in shapingof the environment?

Two people are standing together in an elevator, but they do not speak to each other or look each other in the eye. erving goffman called this type of interaction

A person without a spleen a) cannot survive. B) cannot synthesize red blood cells. C) cannot synthesize white blood cells. D) may need antibiotic therapy. E) may need blood transfusions to prevent anemia.

What is it called when a person is in a state of deep unconsciousness from which he or she cannot be aroused?

To offset high levels of carbon dioxide which of the following is the most viable option? A. pump oxygen in using oxygen tanks B. include indoor plants C. take shorter or less breathes D. keep windows and doors closed