George believes that rotting garbage can turn into maggots that grow up to be flies. Use a principle from cell theory to explain why this cannot occur.

Monosaccharides are also known as what? a. fats b. simple sugars c. proteins d. amino acids

Name the organs of human elemintary canal.

Viewed through a microscope, a sample of natural water is seen to contain sphere-shaped and rod-shaped bacteria. Which of the following conclusions is best supported by this observation?

How can you tell if an experiment is controlled?

What is a compound that is cycled through an ecosystem?

Which is a frame shift mutation

In the heart, the mixing of oxygen-rich and oxygen-poor blood is prevented by the. • septum ... • pericardium ...

Which of the following provide the most readily available energy? carbohydrates lipids nucleic acids proteins

4. Based on the information in the text, what do you think would happen to Earth's surface if erosion Tectonics, and volcanism suddenly stopped occuring? A. Earth would continue to erase evidence of past impacts. B. Earth would have fewer craters. C.

Humans are not the only animals that pollute the air.