This challenging topic is full of comparisons. Choose 3 of the following pairs of ideas. For each, you will need to give at least one similarity and two differences.

Which describes a grizzly bear’s habitat?

What is a difference between systemic and pulmonary circulation? a. systemic circulation carries oxygenated blood to the lungs and pulmonary circulation carries deoxygenated blood to the body. b. systemic circulation carries deoxygenated blood to the lungs and pulmonary circulation carries oxygenated blood to the body. c. systemic circulation carries deoxygenated blood to the body and pulmonary circulation carries oxygenated blood to the lungs. d. systemic circulation carries oxygenated blood to the body and pulmonary circulation carries deoxygenated blood to the lungs.

Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.