Q: Molds, pollen, and pet dander are examples of air pollution with what type of source? Choices: - ecological - physical - chemical - biological A:
biological

Q: Communication is any way that animals share what? Choices: - water - genes - food - information A:
information

Q: Q: The lungs of mammals are unique in having what? Choices: - alveolar - glands - acini - alveoli A:
A: alveoli

Question: Q: Which direction from the source do pollutants in an aquifer spread? Choices: - southward - forward - inward - outward A:
Answer: outward

*Question*
Q: What is the disease in which bronchioles in the lungs periodically swell and fill with mucus? Choices: - nausea - leukemia - allergy - asthma A:
**Answer**
asthma

(Question)
Q: What are bacteria that stain purple are called? Choices: - gram-neutral bacteria - gram-negative bacteria - complex bacteria - gram-positive bacteria A:
(Answer)
gram-positive bacteria