Answer the following question given this paragraph: respiratory system disease in which air passages of the lungs periodically become too narrow, making breathing difficult. Q: What makes breathing difficult due to respiratory system disease? Choices: - weak lungs - slippery air passages - water in the lungs - narrow air passages A:
narrow air passages

Answer the following question given this paragraph: Secondary growth of sweet potato roots provides more space to store food. Roots store sugar from photosynthesis as starch. What other starchy roots do people eat?. Q: What part of the sweet potato store sugar from photosynthesis as starch? Choices: - plants - skin - shrubs - roots A:
roots

Answer the following question given this paragraph: Infectious diseases are diseases that are caused by pathogens. Human pathogens include bacteria, viruses, fungi, and protozoa. Different pathogens spread in different ways. Pathogens may spread through contaminated food or water, sexual contact, droplets in the air from coughs or sneezes, contaminated objects or surfaces, or vectors. Q: What type of disease is caused by pathogens? Choices: - viral diseases - nervous diseases - autoimmune diseases - infectious diseases A:
infectious diseases