Answer:
I think Galaxy hope this help in anyway!
Explanation:
Because there will be no bias if the reasearcher knows which drug is being given and the subject wont know what they are being given so both may assume that the subject is going to feel happier and expect to have an elevated mood and relieve feelings of depression. Hope this helps :)
One type of anaerobic respiration would be air.
Can you show choices? but i think it may be peripheral
Pretty sure that the number is increased to 4n by meiosis.