Scientists estimate ages of rock using what?

Toni has a blood disorder that gets its name from the shape of the red blood cells. she would be diagnosed with what disorder?

How often does a birth of a baby occur in the us?

In a balanced ecosystem, the number of 1. (herbivores, producers, tertiary consumers) is far greater than the number of 2. (consumers, secondary consumers or omnivores)

Only substances that are filtered by the kidneys can be excreted by them. a. true b. false

Giraffes evolved over many generations to have long necks. Giraffes that had longer necks were more likely to survive than giraffes with shorter necks because they had better access to food. This is an example of

What happens to the water particles in a wave? The wave pushes the water particles forward. The water particles move in a circular pattern. The wind pushes the water particles down. The water particles move up through the wave.

Which scientists first discovered gene linkage on chromosomes?

One cubic centimeter is equal to one millimeter (mL). How many liters of water can a 1,800 cm^3 pan hold.

Describe how the granite of a mountain could change first into sandstone and then into quartzite.

What where the conditions like on early earth