Answer:
Ethylene
Explanation:
Ethylene is a hormone required to trigger fruit ripening, and it can be blocked by using synthetic compounds, such as 1-methyl-cyclo-propene (1-MCP).
Really it matters on which head you start the flip on. Whichever head you start with, there's a 51% chance to land on that one. If you start with heads, it would be 255 times.
I don't see the choices, but I can help explain them to you! :) A Tropical Dry Forest has extremely high temperatures year round and doesn't get as much rain as a tropical rain forest. There tends to be more dry times of the year than wet, but when it rains, it rains a lot. On the other hand though, a Tropical Rain Forest has very humid and a really wet and soggy climate year round. It's extremely rare for this forest not to rain. I hope this cleared some things up for you! Hope this helped! :)