Q: What is the age-related disorder that causes the gradual loss of bone density and strength? Choices: - mitosis - arthritis - fibrosis - osteoporosis A:
osteoporosis

Q: The toothlessness of modern birds, which serves to trim the weight of the head, is an example of what? Choices: - mutation - genetic drift - variety - adaptation A:
adaptation

Q: Q: Where are hormones released? Choices: - liver - lungs - brain - bloodstream A:
A: bloodstream

Question: Q: An electric transformer connects two circuits with an iron core that becomes what? Choices: - inductive - radioactive - actuator - electromagnet A:
Answer: electromagnet

*Question*
Q: Which continent is the only one that reptiles don't inhabit? Choices: - Africa - South America - Europe - antartica A:
**Answer**
antartica

(Question)
Q: Shrimp are an example of what group within the arthropods? Choices: - myriapods - insect - scorpion - crustaceans A:
(Answer)
crustaceans