Ques: Q: What is the type of energy that involves movement? Choices: - molecular energy - thermal energy - light energy - mechanical energy A:
Ans: mechanical energy

Ques: Q: When bacteria are destroyed by leukocytes, what are released into the blood? Choices: - carcinogens - proteins - sporozoans - pyrogens A:
Ans: pyrogens

Ques: Q: Meningitis is an infection of the membranes that cover the brain and what else? Choices: - umbilical cord - notochord - liver - spinal cord A:
Ans: spinal cord

Ques: Q: Why does warm air rise higher in the troposphere? Choices: - it is more dense than cool air - It contains hydrogen - it is less flourishing than cool air - it is less dense than cool air A:
Ans:
it is less dense than cool air