Answer:
health, stressful life transitions, & care-giving responsibilities.
Explanation:
According to my research on senior citizen problems, I can say that based on the information provided within the question older adults typically worry more about matters such as health, stressful life transitions, & care-giving responsibilities. This is because at that age these are primary concerns that need solutions in order to live a good life.
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Against their concentration gradient means its active transport.
Diffusion is with the concentration gradient.
Osmosis is the movement of water.
Answer:
A feedback loop is a biological occurrence where the output of a system amplifies the system (positive feedback) or inhibits the system (negative feedback).
Explanation:
Example, during blood clotting, a cascade of enzymic proteins acitvates each other, leading to the formation of fibrin clot that prevents further blood loss.
