If it takes 500 seconds for the light from the Sun to reach

Earth, what is the distance to the Sun in meters? (The speed

of light is 300,000,000 meters/second.)

The elements or compounds produced by a chemical reaction are known as reactants.

The gray tree frog is closely related to the green tree frog genetically, but they have different mating calls. This suggests that speciation occurred because of

In the first reaction of glycolysis, glucose is converted to glucose 6‑phosphate. a. The phosphate comes from ATP. b. A kinase is an enzyme that transfers the terminal phosphate of to a substrate. c.

If one of the station models were to show that the barometric pressure was steadily dropping and the current weather conditions showed a light drizzle with a temperature of 65o, what would you expect the weather to be over the next six hours?

Why was it important for Mendel to study such a large sample of pea plants

Aquatic organisms in lakes and ponds are often able to survive the water underneath a layer of ice because the water underneath the ice remains liquid.

On an evolutionary tree, what is the intersection and common ancestor known as?

Why DNA must unzip before it can be copied.

Dna is a polymer, which means that is made up of many repeating single units (monomers). what are the monomers called?

Which is biotic? a. wind b. iron gate c. sunlight d. dead leaf