Which structure carries blood to the heart so the heart has its own supply of oxygen and nutrients to perform its functions?

What type of organism is likely to live on a dead tree in a dense forest

Movement of the body is accomplished directly by the actions of which of these organ systems? Muscular Skeletal Nervous Integumentary

The Mohs scale is used to determine a mineral's

Fat-soluble vitamins are more likely to be toxic in excess than water-soluble vitamins. a. True b. False

Which of the following is true regarding audience? A. Consideration of the audience is less important than the message of an essay. B. An author should write for himself first; the audience is secondary. C.

How do scientists obtain knowledge about the world? Check all that apply.

What would the temperature of the surface be if the Earth did not have an atmosphere?

How would the lack of water affect cellular respiration?

Different types of normal tissues in the human body have different mitotic indices. From the following list, which normal tissues would you expect to have the highest mitotic index: muscle, skin, kidney, or lung? Explain your answer.

A group of scientists decided to post their research results on the Internet instead of publishing in a scientific journal. What part of the scientific process have they skipped and why does it matter?