Q: What protects reptiles from injury and loss of water? Choices: - hairs - pores - tail - scales A:
scales

(Question)
Q: What's the term for a piece of an organism breaking off and forming a new organism? Choices: - depletion - improvization - extinction - fragmentation A:
(Answer)
fragmentation

Ques: Q: What do vaccines produce to combat viral diseases? Choices: - sterility - sensitivity - hyperthyroidism - immunity A:
Ans: immunity

(Q).
Q: Knees and elbows are examples of what part of the skeletal system? Choices: - cartilage - muscles - nerves - joints A:
(A).
joints

Ques:Q: How many variables are used to describe the condition of a gas? Choices: - five - one - three - four A:

Ans:four

Ques: Q: The number of valence electrons determines variation of what property in nonmetals? Choices: - permeability - density - turbidity - reactivity A:
Ans:
reactivity