Answer the following question given this paragraph: The jointed appendages of arthropods may be used as legs for walking. Being jointed makes them more flexible. Try walking or climbing stairs without bending your knees, and you'll see why joints are helpful. In most arthropods, the appendages on the head have been modified for other functions. Figure below shows some of the head appendages found in arthropods. Sensory organs such as eyes are also found on the head. Q: What may the jointed appendages of arthropods be used for? Choices: - jumping - crawling - digging - walking A:
walking
Answer the following question given this paragraph: The right ventricle pumps oxygen-poor blood toward the lungs, where it receives oxygen. Q: The right ventricle pumps what type of blood toward the lungs? Choices: - plasma - oxygenated - oxygen-rich - oxygen-poor A:
oxygen-poor
Q: Answer the following question given this paragraph: Q: What control reproductive cycles, which are in turn regulated by environmental cues? Choices: - brain waves - enzymes - nerve impulses - hormones A:
A: hormones
Question: Answer the following question given this paragraph: Many people have vision problems. Often, the problem is due to the shape of the eyes and how they focus light. Two of the most common vision problems are nearsightedness and farsightedness. Q: What are two of the most common vision problems? Choices: - blindness and astigmatism - myopia and nearsightedness - cross-eye and blindness - nearsightedness and farsightedness A:
Answer: nearsightedness and farsightedness
*Question*
Answer the following question given this paragraph: There are many blood vessels in the kidneys ( Figure above ). The kidneys remove urea and other wastes from the blood through tiny filtering units called nephrons. Nephrons ( Figure below ) are tiny, tube-shaped structures found inside each kidney. Each kidney has up to a million nephrons. Each nephron collects a small amount of fluid and waste from a small group of capillaries. Q: What are the tiny, tube-shaped structures found inside a kidney called? Choices: - neurons - jejunum - dendrites - nephrons A:
**Answer**
nephrons
*Question*
Answer the following question given this paragraph: Forests are also being destroyed. Trees may be cut down for their wood, or they may be burned to clear the land for farming. Burning wood releases more carbon dioxide into the atmosphere. You can see how a tropical rainforest was cleared for farming in Figure below . With forests shrinking, there are fewer trees to remove carbon dioxide from the air. This makes the greenhouse effect even worse. Q: What does burning wood release into the atmosphere? Choices: - oxygen - helium - hydrogen chloride - carbon dioxide A:
**Answer**
carbon dioxide