I would say C! Most developing countries have high birth and death rates, while developed countries are more steady.
.75. 75% A because is is a dominant gene. a is 25% because it is recessive, and is mostly overcome by a dominant gene.
The type of stimulus following a behavior removes something that is unpleasant is the negative reinforcer.
Stimulus is any signal. This can be in the form of touch, smell, taste, etc. This stimulus triggers the nerve cells of the body that send to signals to the brain to generate a response. For example, when one person touches a hot utensil, the touch of heat acts as a stimulus, where the brain sends response in the form of instantly removal of the hand.
Negative reinforcement is the response towards a stimuli that has not yet been received. For example, taking a medicine before any disease appears is the acts of negative reinforcement.
To know more about negative reinforcement, here
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I believe it is D, to protect weakened ecosystems and their wildlife
If ecology is an option than it is that.
