Q: Mushrooms are an example of what type of organism, which includes beneficial and toxic specimens? Read this paragraph and choose the correct option from the provided answers: Some of the best known types of fungi are mushrooms, which can be edible or poisonous ( Figure below ). Many species are grown commercially, but others are harvested from the wild. When you order a pizza with mushrooms or add them to your salad, you are most likely eating Agaricus bisporus , known as white or button mushrooms, the most commonly eaten species. Other mushroom species are gathered from the wild for people to eat or for commercial sale. Many mushroom species are poisonous to humans. Some mushrooms will simply give you a stomachache, while others may kill you. Some mushrooms you can eat when they are cooked but are poisonous when raw. So if you find mushrooms in the wild, don't eat them until you are certain they are safe!. Choices: - spores - bacteria - seeds - fungi A:
fungi

Q: A low level of radiation occurs naturally in the environment and is called what? Read this paragraph and choose the correct option from the provided answers: A low level of radiation occurs naturally in the environment. This is called background radiation. One source of background radiation is rocks, which may contain small amounts of radioactive elements such as uranium. Another source is cosmic rays. These are charged particles that arrive on Earth from outer space. Background radiation is generally considered to be safe for living things. You can learn more about background radiation with the animation at this URL: http://www. pbs. org/wgbh/nova/dirtybomb/sources. html. Choices: - Gamma radiation - Beta radiation - Alpha radiation - background radiation A:
background radiation

Q: What can be used to mechanically separate the two elements by attracting the iron filings out of the mixture and leaving the sulfur behind? Read this paragraph and choose the correct option from the provided answers: When iron filings and sulfur powder are mixed together in any ratio, they form a mixture. No chemical reaction occurs, and both elements retain their individual properties. A magnet can be used to mechanically separate the two elements by attracting the iron filings out of the mixture and leaving the sulfur behind. Choices: - centrifuge - laser - graduated cylinder - magnet A:
magnet