What two systems are responsible for controlling body activities? What structures allow them to do so

What is the difference between a mollusk and an annelid?

The polarity of water describes the unequal sharing of electrons. What can you expect to find in a water molecule? A ionic bonds B negative charges only C partial positive and negative charges D positive charges only

What are variations of a gene called?

An aneurysm is a traveling blood clot that becomes lodged in the brain. an aneurysm is a traveling blood clot that becomes lodged in the brain. a. True b. False

Describe how water goes through the hydrologic cycle, starting and ending with ocean water.

What (type of rock) are you most likely to find fossils?

Where is neuronal convergence least to occur in the retina

If earth didn't rotate what would be one major obstacle life would have to overcome

Ferns get oxygen from what?

Is a cell or organ that secretes substances for use elsewhere in the body?