I think the hormone would be testosterone, it would be subjectively deemed useless in times other than procreation. I would suggest that the important hormone is the growth hormone Thank you for your question.
Answer:
A energy loss through heat
Mendel's was sucessful geneticist becasue of the following reasons
1) he worked on pisum sativum which is bisexual
2) short duration of life cylce
3) its an annual plant
4) he was also having gud knowleged of statics
Answer:
Substances with a pH less then 7 are acids. So they are 0-7
Explanation:
Hope this helps :)