Desertification may be caused by

water pollution

smog

rain

overgrazing

A key feature of animal body plans is that they can show multiple types of symmetry for example a dog would represent bilateral symmetry while a jellyfish and other Cnidaria would represent?

Creatine kinase (ck), lactate dehydrogenase (ld), and aspartate transferase (ast) (formerly sgot) are examples of:

Particles that are made up of proteins, nucleic acids, and sometimes lipids and that can only reproduce by infecting living cells are called

In the kidneys, both useful substances and wastes are removed from the blood by

I can eat a blow pop by just sucking on it for 3 mintutes.

Which advantages does the skeleton of birds provide for flight? a. Light hollow bones b. Volume and heavy weight for lift c. Rigid structure to anchor strong muscles for flight d. Loosely unconnected bones

What percentage of information is considered visual while driving?

How will changing the rate of respiration affect an organism's mass

Explain how blood is prevented from flowering backwards in the heart

He phase of the cell cycle where dna replication, chromosome duplication and preparations for cell division occur is called