Ques: Q: What are formed when primary pollutants interact with sunlight, air, or each other? Read this paragraph and choose the correct option from the provided answers: Secondary pollutants are formed when primary pollutants interact with sunlight, air, or each other. They do not directly cause pollution. However, when they interact with other parts of the air, they do cause pollution. For example, ozone is created when some pollutants interact with sunlight. High levels of ozone in the atmosphere can cause problems for humans. Choices: - cross pollutants - typical pollutants - secondary contaminants - secondary pollutants A:
Ans: secondary pollutants

Ques: Q: What happens when the blood cannot reach the heart because a blood vessel is blocked? Read this paragraph and choose the correct option from the provided answers: A heart attack happens when the blood cannot reach the heart because a blood vessel is blocked. If cardiac muscle is starved of oxygen for more than roughly five minutes, it will die. Cardiac muscle cells cannot be replaced, so once they die, they are dead forever. Coronary heart disease is the leading cause of death of adults in the United States. The image below shows the way in which a blocked coronary artery can cause a heart attack and cause part of the heart muscle to die ( Figure below ). Maybe one day stem cells will be used to replace dead cardiac muscle cells. Choices: - fast heart beat - heart burn - pass out - heart attack A:
Ans: heart attack

Ques: Q: Wearing what will reduce the amplitude of sound waves entering the ears? Read this paragraph and choose the correct option from the provided answers: Hearing loss due to loud sounds can be prevented by wearing hearing protectors. They reduce the amplitude of sound waves entering the ears. Choices: - goggles - megaphone - hardhat - hearing protectors A:
Ans: hearing protectors

Ques: Q: What is formed when an acidic solution and a basic solution react together in a neutralization reaction? Read this paragraph and choose the correct option from the provided answers: An acidic solution and a basic solution react together in a neutralization reaction that also forms a salt. Choices: - Sodium - seawater - shallow - salt A:
Ans:
salt