What causes red tide?

Which category of carbon-based molecules includes sugars and starches?

Skeletons of early vertebrates were composed of cartilage instead of bone. Which characteristic does cartilage share with notochords? A. It is hard and rigid. B. It is soft and flexible. C. It contracts. D. Oxygen can diffuse through it.

How do carcinogens contribute to the development of cancer cells?

Fish have what type of circulatory system?

When a mass increases, its gravitational force A. Increases B. decreases C. stays the same

The left hemisphere of the cerebral cortex is connected to skin receptors and muscles mainly on the right side of the body. a. True b. False

What does the cell nucleus contain A. chromosomes B. vacuoles C. cytoplasm D. chloroplasts

What is the photosynthesis equation

What three types of evidence allows us to determine whether organisms shared a common ancestor?

When addressing a counterclaim in an argumentative essay, it is important to A. Consider how the counterclaim reinforces then main position of your argument B. Include details and statistics that support the counterclaim C.