Nitrogen is generally available to plants in only two forms : ammonium and

Which question can be answered by science? a. why do you think people should use paper bags? b. should people be required to reuse plastic bags? c. should the government regulate the use of shopping bags? d.

What is measured by a wave period

In the process of photosynthesis, plant cells take in water (h2o) and carbon dioxide (co2) and release oxygen (o2). how is this different from what takes place in the process of aerobic respiration? a.

Which of the following best supports the idea that the atmosphere of early earth contained no oxygen?

What do all cells must contain?

What type of organism moves using cilia

The punnet square shows the results when two parent cows are crossed. R represents red hair and represents white hair. Which best describes this inheritance pattern?

Which plant division has seeds with a 3n endosperm due to double fertilization?

What is a difference between systemic and pulmonary circulation? A. Systemic circulation carries deoxygenated blood to the lungs and pulmonary circulation carries oxygenated blood to the body. B.

Name the cells that are produced by the testes and ovaries