Q: What class of animals have four limbs and produce amniotic eggs? Choices: - reptiles - insects - amphibians - mammals A:
mammals

(Question)
Q: Ionic compounds take on the form of extended three-dimensional arrays of cations and what else? Choices: - oxides - electrons - crystals - anions A:
(Answer)
anions

Ques: Q: What compound has positive and negative ions? Choices: - hydrocarbon - protein - covalent - ionic A:
Ans: ionic

(Q).
Q: Each vertebral body has a large hole in the center through which the nerves of what pass? Choices: - layers cord - Brain Cord - steering cord - spinal cord A:
(A).
spinal cord

Ques:Q: What nest of cells protect the egg as it matures in the ovary? Choices: - the tube - the clump - the epidermis - the follicle A:

Ans:the follicle

Ques: Q: What kind of energy is released when the thermochemical reaction of a campfire converts wood to carbon dioxide and water? Choices: - ultraviolet - light - smoke - heat A:
Ans:
heat