The answer is all the above.
A scientist is someonewho frequently engages in an activity in order to acquire knowledge using a scientific method.
If the scientist is studing the risk of the substance, he needs to acquire the most information as possible, so he:
conducts experiments to identify the hazard,
<span>collects and analyzes risk characterization data,
</span><span>researches how chemicals react with living cells and</span>
tests the effects of the substance on the populations.
<span>Most reflex arcs involve only three neurons. The stimulus, such as a needle stick, stimulates the pain receptors of the skin, which initiate an impulse in a sensory neuron. This travels to the spinal cord where it passes, by means of a synapse, to a connecting neuron called the relay neuron situated in the spinal cord.</span>
Answer:
After about 48 to 72 hours -- or once the swelling has satisfactorily decreased -- heat can then be used to increase blood flow to the injury and aid your recovery.
Explanation:
Answer:
3. A substance that contains color.
Explanation:
That's the definition that applies to every form of the word.
