If a boy exhibits a sex-linked trait that is carried on the X chromosome, what mustbe true?

7. What happens to the air pressure in an area when a cold air mass becomes denser? A. The air pressure reverses. B. The air pressure increases. C. The air pressure decreases. D. The air pressure stays the same

The study of passing traits from parents to offspring is known as a. heredity b. genetics

When do bone cells form new bone tissue?

The brain's outermost cellular layer is called the:

Non-renewable energy resources are: * A) not harmful to the climate if used in moderation. B) found in nature, so they're ok to use. C) never going to run out. D) harmful to the environment in any amount.

Pollution stays in the area where it is produced. a. True b. False

A male tree frog migrates to a new habitat with little ground vegetation and many tall trees. Jumping is the safest way for the frog to move from tree to tree.

Select the correct answer. Neurofibromatosis, a genetic disease caused by mutation on the NF1 gene, follows an autosomal dominant pattern of inheritance.

Which of the following is NOT a way a cell can increase its surface area A. decrease its volume B. add organelles C. let water out of the cell D. all of the above

Using a pH meter, you find that egg whites have a pH of nearly 8 and egg yolks have a pH near 6, if litmus paper turns blue in bases and red in acids, which part of eggs would turn litmus paper blue? A. both B. egg whites C. egg yolks D. neither