Ez questions- : Fill in the blanks:

a. The circulatory system is made up of the heart plus all of the blood vessels and .

b. When we breathe, a large muscle called the helps us draw oxygen into our lungs.

The energy of blowing wind can be harnessed to create electricity. why is wind considered a renewable energy source? a) wind does not cause destruction of the environment.b) wind turns the blades of a windmill that creates electricity.c) wind provides only a very small amount of electricity to the united states.d) wind comes from atmospheric conditions that are available indefinitely.

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above

Why did mendel use pea plants in his experiments? a. they have no alleles. b. they are haploid organisms. c. they reproduce quickly. d. they are all male.