Answer: The answer is D.
Explanation: I know this because the sun is in the center of the solar system which has gravitational forcefield, but the outter part in the solar system has a gravitational forcefield. That's how they rotate and move.
Answer: cellular report occurs in the respiratory system or the lungs and nasal cavity
explanation: it happens because when we intake oxygen, it reacts with glucose present in our body. this reaction gives out carbon dioxide, water and energy as products.
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Answer:
Please give more context.
Explanation:
Answer:
Blood vessels constrict
Explanation:
On seeing danger, impulses are sent to the adrenal medulla. It responds by secreting adrenaline into the bloodstream. This results in the following:
- Increased heartbeat
- Diversion of blood from alimentary canal and skin to skeletal muscles.
- Increased breathing rate and depth
- The liver releases more glucose.
These changes increase energy production especially in the skeletal muscles and prepare animal for sudden fight or flight.
Geologist have identified over than 4,000 minerals