Answer the following question given this paragraph: Remember the quarks from the first page of this chapter? Quarks are even tinier particles of matter that make up protons and neutrons. There are three quarks in each proton and three quarks in each neutron. The charges of quarks are balanced exactly right to give a positive charge to a proton and a neutral charge to a neutron. It might seem strange that quarks are never found alone but only as components of other particles. This is because the quarks are held together by very strange particles called gluons. Q: How many quarks are in each proton and neutron? Choices: - ten - five - four - three A:
three
(Question)
Answer the following question given this paragraph: An acidic solution and a basic solution react together in a neutralization reaction that also forms a salt. Q: What is formed when an acidic solution and a basic solution react together in a neutralization reaction? Choices: - Sodium - seawater - shallow - salt A:
(Answer)
salt
Ques: Answer the following question given this paragraph: In some countries, birth rates have fallen even lower than death rates. As result, their population growth rates are negative. In other words, the populations are shrinking in size. These populations have top-heavy population pyramids, like the one for Italy shown in Figure below . This is a new stage of the demographic transition, referred to as Stage 5. You might think that a negative growth rate would be a good thing. In fact, it may cause problems. For example, growth-dependent industries decline. Supporting the large aging population is also a burden for the shrinking younger population of workers. Q: What results when birth rates fall even lower than death rates? Choices: - disease - mutation - increased growth rate - negative growth rate A:
Ans: negative growth rate
(Q).
Answer the following question given this paragraph: Rust is a combination of several different oxides of iron. The equations below show the steps involved in one of the many processes of rust formation. Q: Rust consists of oxides of what element? Choices: - Copper - Gold - Aluminum - iron A:
(A).
iron
Ques:Answer the following question given this paragraph: True predation is when a predator kills and eats its prey. Some predators of this type, such as jaguars, kill large prey. They tear it apart and chew it before eating it. Others, like bottlenose dolphins or snakes, may eat their prey whole. In some cases, the prey dies in the mouth or the digestive system of the predator. Baleen whales, for example, eat millions of plankton at once. The prey is digested afterward. True predators may hunt actively for prey, or they may sit and wait for prey to get within striking distance. Certain traits enable organisms to be effective hunters. These include camouflage, speed, and heightened senses. These traits also enable certain prey to avoid predators. Q: When a predator kills and eats its prey, what sort of predation is this referred to as? Choices: - false - just - predestined - true A:

Ans:true
Question: Answer the following question given this paragraph: Power plants are where electric power originates. They have electric generators that generate electric current through electromagnetic induction. Q: Where does electric power originate? Choices: - the Sun - magnets - coal mines - power plants A:
Answer:
power plants