The A, T, C and G in DNA are really ...

phosphates

nitrogen bases

sugars

amino acids

During which months do both the Northern and Southern Hemispheres receive the same amount of energy from the Sun?

Why is radioactive and decay material essential in determining the absolute age of a rock layer or fossil

Give three examples of of potential energy converted to kinetic energy.

The survival of a species depends on its ability to adapt to changes in the environment. A species must be capable of surviving and reproducing despite changes to food sources, climate, or threats from predators.

The area in which sediment is deposit along the shore is the A. cave B. beach C. cove D. current

Organisms which can make their own food are found in this kingdom:

What are hormones and why are they important?

What is the central dogma that tells how information is transformed to make a protein

Select one organism from above and describe how it functions in the energy pyramid

Which event must precede all others during tissue repair? which event must precede all others during tissue repair? inflammation occurs near the affected cells. epithelia reproduce and migrate to the damaged area.