Answer the following question given this paragraph: The density of air varies from place to place. Air density depends on several factors. One is temperature. Like other materials, warm air is less dense than cool air. Since warmer molecules have more energy, they are more active. The molecules bounce off each other and spread apart. Another factor that affects the density of air is altitude. Q: Since warmer molecules have more energy, they are more what? Choices: - inactive - dense - abundant - active A:
active
Answer the following question given this paragraph: Q: In artificial passive immunization, which items from an immune animal are injected into a nonimmune animal? Choices: - parasites - platelets - allergies - antibodies A:
antibodies
Q: Answer the following question given this paragraph: A bowling ball rolls down a lane at a constant velocity. (e) A car accelerates down the road. There is friction between the tires and the road. Q: What does the tires meeting the road cause when a car accelerates? Choices: - erosion - vibration - thrust - friction A:
A: friction
Question: Answer the following question given this paragraph: Nervous tissue may become infected by microorganisms. Meningitis , for example, is caused by a viral or bacterial infection of the tissues covering the brain. This may cause the brain to swell and lead to brain damage and death. Q: Which organ of our body is harmed if you get meningitis? Choices: - spleen - lung - heart - brain A:
Answer: brain
*Question*
Answer the following question given this paragraph: Although the nervous system is very complex, nervous tissue consists of just two basic types of nerve cells: neurons and glial cells. Neurons are the structural and functional units of the nervous system. They transmit electrical signals, called nerve impulses. Glial cells provide support for neurons. For example, they provide neurons with nutrients and other materials. Q: Nervous tissue consists of just two basic types of nerve cells: neurons and? Choices: - white blood cells - red blood cells - mammalian cells - glial cells A:
**Answer**
glial cells
(Q).
Answer the following question given this paragraph: An organ is a structure composed of two or more types of tissues that work together to do a specific task. Most modern plants have several organs that help them survive and reproduce in a variety of habitats. Major organs of most plants include roots, stems, and leaves. These and other plant organs generally contain all three major tissue types. Q: What do you call a structure composed of two or more types of tissues that work together to do a specific task? Choices: - cell - marrow - system - organ A:
(A).
organ