Q: Answer the following question given this paragraph: Conducting wires have a small electrical resistance. The electrical resistance of a conducting wire is related to the type of metal used and inversely related to the cross-sectional area of the wire. The larger the diameter of a wire, the greater the cross-sectional area, and the lower the electrical resistance will be. When electrons flow through a wire, they repel each other and interfere with the passage of other electrons. If there are a very large number of electrons passing through a wire with small diameter, the electrons will experience a greater resistance than if the wire diameter were larger and the electrons had more space between them. Q: Conducting wires have a small degree of what? Choices: - magnetism - insulation - heat - electrical resistance A:
A: electrical resistance

Q: Answer the following question given this paragraph: Curiosity, the rover, has found evidence of a flowing stream on Mars. Layers of smooth, water-polished pebbles have been photographed. This is exactly what you would see in a stream on Earth. There are many surface features that look like water-eroded canyons. Since there was liquid water on Mars, scientists think that life might have existed there in the past. One of Curiosity's tasks is to sample the soil to search for carbon and other evidence of life. Q: Evidence for the presence of what on mars makes scientists think that life might have existed there in the past? Choices: - gas - plasma - air - water A:
A: water

Q: Answer the following question given this paragraph: Neurons transmit nerve impulses to other cells. Q: What transmits nerve impulses to other cells? Choices: - fats - muscles - ions - neurons A:
A: neurons

Q: Answer the following question given this paragraph: Arthropods are the largest phylum in the animal kingdom. Most arthropods are insects. The phylum also includes spiders, centipedes, and crustaceans. The arthropod body consists of three segments with a hard exoskeleton and jointed appendages. Terrestrial arthropods have adaptations for life on land, such as trachea or book lungs for breathing air. The earliest arthropods were trilobites. The earliest land arthropods were millipedes. Q: The largest phylum in the animal kingdom, arthropod, is primarily comprised of what? Choices: - reptiles - mammals - amphibians - insects A:
A: insects