Answer:
B
Explanation:
Selective Breeding is the process by which organisms choose their mate based off of specific traits.
Answer: A.it is a relatively new human adaptation.
Explanation:
Fight or flight response is a response shown by a human or animal body towards acute stress. It is a physiological reaction that occurs in response to the perceived attack, survival threat and attack. The animals or humans react to threats by the hormonal secretion from sympathetic nervous system. This prepared animals for fighting. The hormonal secretions like catecholamines, epinephrine and nonepinephrine helps in generation of response. Neurotransmitters dopamine, estrogen, testosteron e and cortisol affects how organisms react to the stress.
Fight-or-flight reaction is not a relatively new human adaptation but it is evolved as a survival mechanism which was also present in primitive human beings and mammals and helped them to react in the life-threatening situations.
Answer:
The best answer would be C.
Explanation:
Recycling can conserve natural resources. Recycling is an important factor in conserving natural resources and greatly contributes towards improving the environment. Recycling conserves natural resources, such as wood, water, minerals, and fossil fuels, because materials can be reused.
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Answer:
Before the park's wolf reintroduction, loss of aspen trees in Yellowstone National Park was traced to elk grazing . Now wolves help control the elk population.
Explanation:
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