(Q).
Answer the following question given this paragraph: Q: What is the name for a parasite that causes disease? Choices: - fungi - enfluenza - microbes - pathogen A:
(A).
pathogen

(Q).
Answer the following question given this paragraph: The thymus is found behind the sternum. The thymus produces hormones referred to as thymosins, which contribute to the development of the immune response in infants. Adipose tissue, or fat tissue, produces the hormone leptin in response to food intake. Leptin produces a feeling of satiety after eating, reducing the urge for further eating. Q: What produces hormones referred to as thymosins, which contribute to the development of the immune response in infants? Choices: - pancreas - heart - receptors - thymus A:
(A).
thymus

(Q).
Answer the following question given this paragraph: Severe thunderstorms have a lot of energy and strong winds. This allows them to produce tornadoes. A tornado is a funnel-shaped cloud of whirling high winds. You can see a tornado in Figure below . The funnel moves along the ground, destroying everything in its path. As it moves it loses energy. Before this happens it may have gone up to 25 kilometers (16 miles). Fortunately, tornadoes are narrow. They may be only 150 meters (500 feet) wide. Q: What is a funnel-shaped cloud of whirling high winds known as? Choices: - volcano - tsunami - hurricane - tornado A:
(A).
tornado