Answer:
3. the opposite of the direction of motion
Explanation:
this is to slow down the movement of the object sliding on a surface
Answer:
The calcium ions.
Explanation:
The most directly responsible action for the excitation or contraction of skeletal muscle fibers is the flow of calcium ions. The calcium ions that are stored in the sarcoplasmic reticulum are released upon the stimulation of the muscle and allow it to contract.
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Sweating in response to external stimulus
The process of converting nitrogen gas to nitrate ions that plants can absorb is
Nitrogen fixation
Answer:
D. Weight depends on gravity and mass depends on volume.
