Answer:
B
Explanation:
The whole point of natural selection is for animals to compete to survive in that specific environment
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Answer: B. Neurotransmitters; C. Enzyme components; E. Hormones
Explanation: Aminoacids have a variety of functions because they can create proteins. These long and complex molecules perform important roles in different biological processes: they are responsible for the formation of enzymes and hormones. In neurotransmitters, the glutamate appears to be related to functions of the brain, like learning and memory. Other functions of the aminoacids are regeneration of muscular cells, have a role in imunology, growth of tissue, production of collagen and others.
B. an ecosystem
An ecosystem contains a community (several species of organisms) and the environment including air, water, and more.
The surrounding tissue cannot receive oxygen and they begin to die.
