What is meant by a renewable resource?
a resource that cannot be used more than once.
a resource that can easily be recycled.
a resource that is used at the same or a lower rate than it is made.
a resource that is used faster than it can be replenished.

Coquina, a type of limestone, forms from shell fragments that settle on the ocean floor. what type of rock is coquina?

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

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