Which statement is true of all matter?
a. it has mass
b. it can be seen
c. it exists only as a solid.
d. it maintains its shape and size.
my mind is blank, and i can't seem to remember.

What role do traits play in affecting an organisms ability to reproduce? finches

Elephants in the savanna regions of africa dig holes in dried up river beds to reach water lying just below the surface. these holes provide drinking water for other animals as well. so, without the elephants, many animals might otherwise die from lack of water during the dry season. the location in which the elephants live is an example of a/n and the role they play in creating water holes is an example of a a) ecosystem; habitat b) community; niche c) habitat; niche d) niche; habitat

Solutions to environmental problems in europe must