Answer:
What are the systems
Explanation:
I can help after u answer that sorry
A new cycle starts on the first day of her period, for 3-8 days. 14 days after the first day of the recent period, ovulation happens, & the lining builds up.
So basically, ovulation.
Hope that makes sense & helps. (:
It shows how one continent divided into many.
Answer:
how do animals obtain oxygen? animal cells exchange oxygen and carbon dioxide with their surroundings by diffusion across the puter coverings or membranes of cells.
Explanation:
The correct option is this: HAS THE CLAIM BEEN TESTED NUMEROUS TIMES BY MORE THAN ONE SCIENTISTS.
For a claim to be accepted has been valid in the science world, it must have been tested several times by many scientists who obtain the same results. Having a uniform result about a phenomenon is usually considered an important factor when examining the validity of a claim.