Q: Bone marrow, the thymus gland, the spleen, and the tonsils are organs in what body system? Choices: - skeletal system - nervous system - reproductive system - immune system A:
immune system

(Question)
Q: Yolk is a very fragile substance found in the eggs of reptiles and needs protection. what serves as protection for the yolk? Choices: - fish sac - dish sac - eye sac - yolk sac A:
(Answer)
yolk sac

Ques: Q: Light from a distant galaxy can travel different paths to the earth because it is bent around an intermediary galaxy by what? Choices: - radiation - strength - variation - gravity A:
Ans: gravity

(Q).
Q: What is defined as the rate of energy transferred? Choices: - charge - capacity - pressure - power A:
(A).
power

Ques:Q: What do you call a carnivore that eats mainly insects? Choices: - pescatorian - predator - omnivores - insectivores A:

Ans:insectivores

Ques:Q: The earth's magnetic poles have done what repeatedly in the past? Choices: - rotated - stayed the same - demagnetized - switched places A:

Ans:
switched places