Index fossils serve to identify (A). How thick a given rock layer should be. (B). Specific layers of rocks anywhere.
(C). The composition of different rock layers. (D). The exact location of oceans that no longer exist.

An object is dropped from a tower, 400 ft above the ground. the object's height above ground t seconds after the fall is s(t)equals400 minus 16 t squared. determine the velocity and acceleration of the object the moment it reaches the ground. the velocity of the object the moment it reaches the ground is nothing ft/s.

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

Describe cytokinesis in plants and animals. in animals: in plants.