Under what conditions might a conditioned response become extinct

The feeding job, or role of an organism is it's (talking about ecosystem) 1) contribution 2) niche 3) ecosystem 4) community i think its contribution but i put that last quiz anr i pretty much failed it and it doesnt tell me Whats wrongs so

Stressor is a (n) select one: a. exercise program that increases one's ability to handle normal stress. b. hormone released by the adrenal glands during periods of stress. c. lower back muscle that frequently produces a feeling of physical tension.

What can government, industry and individuals do to lessen the negative impact on the environment?

In an individual of genotype aa, where are the a and a alleles physically located? view available hint (s) in an individual of genotype aa, where are the a and a alleles physically located?

How the transpiration cohesion-tension mechanism explains water movements in plants

2) Garrod hypothesized that "inborn errors of metabolism" such as alkaptonuria occur because A) metabolic enzymes require vitamin cofactors, and affected individuals have significant nutritional deficiencies.

Which term best describes one inheritable form of a single gene? A. locus B. chromosome C. allele D. genome

The nurse is reinforcing instructions to a client following mastectomy who will be discharged with an axillary drain in place. The client will be receiving home care visits from the nurse to monitor drainage and perform dressing changes.

Give one example of a disturbance that can lead to primary succession

Which of the following defines Romeo and Juliet as a tragedy, instead of a comedy?