The "backbone", or sides, of the dna molecule are made of

a. cytosine.

b. nitrogenous bases.

c. hydrogen bonding.

d. sugar and phosphate.

Predict what will happen to an abandoned strip mine over time.

Explain what is unique about the marine worms' digestive and circulatory systems?

How does groundwater relate to the Water Cycle& / watershed?

An apple is cut into slices. Half of the slices are sprayed with lemon juice. All slices are stored in a sealed plastic bag. After 4 days, they are observed to see how brown they turned. What's the independent and dependent variable?

Based on the data collected, what must be added to the yeast in the test tube in order to facilitate fermentation?

Why do you think an ice cube feels cold when you hold it?

A dermatome represents the motor innervation of muscles in that area. a dermatome represents the motor innervation of muscles in that area. a. True b. False

The largest stars known could contain over Suns. OA) 1,000 OB) 100,000 OC) 1,000,000 D) 1,000,000,000

A founding population of lizards arrives on a island. Which type of isolation would likely result in this population becoming a new species

A living thing that does not makes its own food