A Researcher Suspects That the Food in an Ecosystem Has

question 40

Multiple Choice

A researcher suspects that the food in an ecosystem has been contaminated with radioactive phosphates over a period of months. Which of the following substances could be examined for radioactive phosphate to test the hypothesis?

• A) the amino acids within proteins produced by organisms living in the area
• B) the starch produced by plants in the area
• C) the DNA of the organisms in the area
• D) All of the above are true.

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Definitions:

Snake

A legless, carnivorous reptile with a long, slender body covered in scales, belonging to the suborder Serpentes.

Observational Learning

A learning process that occurs through observing the behavior of others and the outcomes of that behavior.

Cognitive Learning

Learning based upon mental processes, such as thinking, memory, understanding, and reasoning, rather than by emotional or instinctual responses.

Classical Conditioning

The development of understanding through the combination of a naturally present stimulus and one from the environment.