Https://healthresearchfunding.org/marcellus-shale-pros-cons/ this site will give you the pros and cons
Answer:
Timeliness
Explanation:
since it means occurring at a favorable or useful time.
Its b i think but i might be wrong i looked it up
Explanation:
At the center its weight is zero. Or you can argue by symmetry: if the weight is not zero, in what direction would it act?
The answer is A.....................................................................
