Within a DNA molecule, which nitrogen base pairs with cytosine (C) ?

A. uracil (U)

B. thymine (T)

C. adenine (A)

D. guanine (G)

How is the blood in the pulmonary artery different from the blood in other arteries?

A wildlife researcher weighed all the raccoons that were trapped in suburban neighborhoods before they were released back into the wild. The researcher used this data to conclude that the raccoons in the state were getting heavier.

When earth worms add their wastes to the soil then die and decay in the soil they are contributing to the formation of

Cells can grow from unspecialized cells into specialized cells by the process of

he continuity of life is based on heritable information in the form of DNA. In a short essay (100-150 words), explain how the passage of genes from parents to offspring, in the form of particular alleles, ensures perpetuation of parental traits in

The majority of water found on Earth is: ice water vapor fresh water salt water

The countercurrent arrangement of the two limbs of the loop of Henle becomes a multiplier of electrolyte concentration due to which other characteristic? A. water permeability of the descending limbB. water impermeability of the ascending limbC.

Which of the following best explains why the latitude of a region influences its climate? A. The latitude of a region determines its proximity to the ocean. B. The latitude of a region determines the landforms present in the area. C.

Erosion occurs naturally but can be made worse by human activities. What types of human activities worsen the rate of soil erosion?

What does rotting and burning biomass emit?