The statement that best describes alice's experiment is
a) the size of the filter paper is serving as a control.
b) the experiment should test only one type of mouthwash.
c) the experiment is well designed and has a valid control.
d) the experiment has too many variables that are being manipulate

Click on  the link  to view information gathered by the organization keep america beautiful. read "the costs of american littering" to find three negative effects of litter in local communities.  based on your research, what are the negative effects of litter in local communities? check all that apply. litter cleanup is very expensive. litter has decreased since 1969.litter is a constant community problem. litter causes property in the community to be less valuable. litter contaminates water and has other environmental consequences.

What was a common feature of civilizations in both mesoamerica and south america during the classical era

The rise of the successor states after the fall of rome led to a decline in christianity. true or false