The raphe system:
a. controls the sensory areas of the spinal cord.
b. is important for balance and coordination.
c. increases the brain's readiness to respond to stimuli.
d. regulates the rate of production of cerebrospinal fluid.

Sea stars, sea urchins, sand dollars, and brittle stars are all memeber of a group, what is the common name of the group they are all in

How many species of living things are alive on earth today? more than 1,000,000 none of these answers are correct 100-500 1,000 –500,000 o 500,000 -1,000,000

Which is a genetic engineering advancement directly related to a career in biotechnology? 1) improving solar energy collection 2) transporting textiles at higher rates 3)creating crop foods that resist insect pests 4)repairing historical sites with quality materials