Which pair of atoms will form an ionic bond?

O A. Na + and CI

O B. Cand C

O C. F and CH

O D. Mgt and Nat

What is the main purpose of carbohydrates in our bodies?

Within the cell, dna is found in the nucleus. which of the other structures within the cell listed below normally contains dna as well

Select the correct answer. Over the last 250 million years, the world changed from a single land mass to a number of different continents. One reason for the change is expanding ocean floors. What causes ocean floors to expand?

A muscle is contracted when which of the following occurs?

Hemophilia is a disorder in which hemostasis is disrupted. What are some possible errors that could cause this disorder?

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

What would happen if the atria and ventricles of the heart contracted simultaneously?

In which of the following processes will substance move from areas of lower concentration to areas of higher concentration?

One polled (hornless) bull is bred to 3 cows. With Cow A, which is horned, a polled calf is produced. With Cow B, also horned, a horned calf is produced. With Cow C, which is polled, a horned calf is produced.

What effect do calcium ions have on the water in ecosystems? A. They reduce its pH. B. They decrease its salinity. C. They add to its hardness. D. They increase its acidity.