Negative reinforcement and positive reinforcement
Answer:B desert.
Explanation: Deserts have low rain, and plants and animals have to adapt to life there.
I would say it would be “sad true lover never find my grave” because it mentions he is the lover in question
D. Laws or principles made by a society and its government.
Answer:
<em>B. Humane methods of animal experimentation</em>
Explanation:
The regulations and guidelines of United States Department of Agriculture , Animal Welfare Act, Public Health Service (PHS), the Guide, and The Association for Assessment and Accreditation of Laboratory Animal Care International, or AAALAC, as applicable, requires organizations or entities that use animals in science, teaching, training, research or testing to provide instruction and training on humane methods of experimentation and research.
