Which dienes and dienophiles below contain activating substituents that will facilitate the diels-alder reaction?

An essential nutrient is one that a) bacteria need for proper growth and can make themselves. b) bacteria need for proper growth and cannot make themselves. c) is not needed by the bacteria for proper growth.

Why are the nerves that take information from our world called sensory neurons?

Which of the following best explains why the diversity of organisms decreases as you move from shallow seas to deep oceans? Answer The lack of sunlight in the deep ocean limits the types of organisms that can survive.

Do scientists Know what is causing El Niño?

How much waste alone comes from toxic and hazardous wastes that are released into the environment? A 40 Million Metric Tons B 265 Million Metric Tons C 11 Million Metric Tons D 100 Million Metric Tons

At one time, biologists thought that fungi were merely forms of plants that had lost their chlorophyll and had returned to decomposing dead nutrients to gain food.

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