Ques:Q: What must happen for two ions to form an ionic bond? Choices: - two ions need to have the same charge - Two ions need to be the same size - two ions need to have neutral charges - two ions need to have opposite charges A:

Ans:two ions need to have opposite charges
-----
Ques:Q: Unlike wild animals, what type of species are genetically uniform, making them more vulnerable to die-out from disease? Choices: - free-range species - urbane species - mammals - domestic species A:

Ans:domestic species
-----
Ques:Q: Animals that live in groups with other members of their species are called what? Choices: - present animals - common animals - energetic animals - social animals A:

Ans:social animals
-----
Ques:Q: What is the waxy substance that epidermal cells secrete? Choices: - cellulose - bile - saliva - cuticle A:

Ans:
cuticle
-----