Answer the following question given this paragraph: Organs may be organized into organ systems. An organ system is a group of organs that work together to do the same job. For example, the heart is part of the cardiovascular system. This system also includes blood vessels and blood. The job of the cardiovascular system is to transport substances in blood to and from cells throughout the body. Q: What is a group of organs that work together to do the same job? Choices: - an organ colony - an organ assembly - an organ battery - an organ system A:
an organ system
Answer the following question given this paragraph: Poison dart frogs have toxins in their skin. Their bright colors warn potential predators not to take a bite!. Q: The bright color of poison dart frogs serves what purpose? Choices: - no purpose - attracting mates - attracting predators - warning predators A:
warning predators
Q: Answer the following question given this paragraph: Humidity is the amount of water in the air. Air with a high concentration of water will be called humid. Moving away from the most humid climate, biomes will be called semi-humid, semi-arid, or arid (the driest). Q: What measures the amount of water in the air? Choices: - cloud cover - temperature - fire index - humidity A:
A: humidity
Question: Answer the following question given this paragraph: An ecosystem consists of all the biotic and abiotic factors in an area and their interactions. A niche refers to the role of a species in its ecosystem. A habitat is the physical environment in which a species lives and to which it is adapted. Two different species cannot occupy the same niche in the same place for very long. Q: What do you call the physical environment in which a species lives and to which it is adapted? Choices: - domain - environment - ecosystem - habitat A:
Answer: habitat
*Question*
Answer the following question given this paragraph: Electricity and magnetism are inextricably linked. Under certain conditions, electric current causes a magnetic field. Under other conditions, a magnetic field can cause an electric current. A moving charged particle creates a magnetic field around it. Additionally, when a moving charged particle moves through a different magnetic field, the two magnetic fields will interact. The result is a force exerted on the moving charged particle. Q: Under certain conditions, electric current causes what type of field? Choices: - light - kinetic - seismic - magnetic A:
**Answer**
magnetic
Answer the following question given this paragraph: sweating. These vessels become smaller when it is cold outside and larger when it is hot (so more fluid flows, and more energy is transferred). The body also loses a significant fraction of its heat through the breathing process. While convection is usually more complicated than conduction, we can describe convection and do some straightforward, realistic calculations of its effects. Natural convection is driven by buoyant forces: hot air rises because density decreases as temperature increases. The house in Figure 14.17 is kept warm in this manner, as is the pot of water on the stove in Figure 14.18. Ocean currents and large-scale atmospheric circulation transfer energy from one part of the globe to another. Both are examples of natural convection. Q: Natural convection is driven by what forces? Choices: - magnetic - thermal - gravitational - buoyant A:
buoyant