Answer:
D. The digestive system breaks food down into the molecules that can be used in respiration.
Explanation:
Because their are less humans who could harm them and less pollution and less predators.
Answer:Alzheimer's disease. Researchers hope that early intervention in individuals at increased risk of developing Alzheimer's will prevent cognitive decline. The estimated completion date for the study is July 2022.
Explanation:
The answer is b.
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People with central body obesity are more likely to develop iron-deficiency anemia than people who do not have excess fat in the mid section of their bodies.
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-Charlie
The skeletal system helps maintain homeostasis<span>. In some of your bones, there is bone marrow. Bone marrow creates red blood cells as the old red blood cells die off. Red cells are very important to the human body, because they carry oxygen to the body's tissue, and they also carry carbon dioxide out to the lungs where it is</span>
