The roots of the trees keeps the soil in place
The best answer would probably be observation because a hypothesis and theory is not always reliable. an observation describes what IS happening during the experiment.
Mainly to make life easier.
if one layer changes than scientists don't need to change all of their data.
it also helps keep organized.
hope this helped
ebs02
:)
Answer: The hormones controlling the female reproductive system include gonadotropin-releasing hormone (GnRH), follicle-stimulating hormone (FSH) and leutenizing hormone (LH), all of which are produced in the brain; oestrogen and progesterone produced by the ovaries and the corpus luteum; and human chorionic gonadotropin (HCG
