Question: Choose your answer.

Why do scientists perform multiple trials of the same experiment?
My Answer: to increase the likelihood of accurate experiment results

Question: Choose your answer.

Which of these best defines communicable diseases?
My Answer: They are spread to others.

Question: Choose your answer.

The crust, the mantle, and the core are structures of Earth. Which description is a feature of Earth's mantle?
My Answer: has properties of both liquids and solids

Question: Choose your answer.

The heart is the major organ of the circulatory system. Which part of the body is responsible for delivering de-oxygenated blood to the heart?
My Answer:
veins