Answer:
because stagnat water contains bacteria and it is the breeding place of mosquitoes
Answer:
D.
Explanation:
She's trying to find the affect different shapes have on the distance the plane flies, not the affect different types of paper have on distance. If she were to use different paper for each plane she'd be testing two variables instead of one.
hope this helps :)
Answer:
I am pretty sure ir is true
Explanation:
costal marshes are where high level of other life like fish and insect are
