Iodine solution is used to test leaves for the presence of starch. You need to: heat a plant leaf in boiling water for 30 seconds (this stops its chemical reactions) heat it in boiling ethanol for a few minutes (this removes most of its colour)
The answer is C the because D is dangerous and A and B you can do but it won’t prevent fires
Answer:
B
Explanation:
Get a referral from his primary care physician.
Answer:
Stimulants and depressants are complete opposites. Stimulants increase function and increase energy and alertness while depressants slow you down to produce tranquilizing side effects. When a person takes both, the body tries to do both at the same time.
There are voluntary and involuntary muscle movements, put your hand on a hot stove for example and your reflexes generally do it for you. That is involuntary and movement produced by the nerves and nerve ending because of the pain that your nerve felt. The doing after telling the brain is something called motor function and the movement isn’t produced on reflexes and nerves alone, it’s a combination of your muscular system and brains motor function working together.
Hope this helps!
