Q: What is a layer of saturated porous rock? Read this paragraph and choose the correct option from the provided answers: An aquifer is a layer of saturated porous rock. It lies below the water table. An impermeable layer, such as clay, is below the aquifer. Choices: - a shear - an overhang - a quarry - an aquifer A:
an aquifer

Q: What system, which includes the skin, plays important roles in protection, sensing stimuli and thermoregulation? Read this paragraph and choose the correct option from the provided answers: 5.3 Functions of the Integumentary System The skin plays important roles in protection, sensing stimuli, thermoregulation, and vitamin D synthesis. It is the first layer of defense to prevent dehydration, infection, and injury to the rest of the body. Sweat glands in the skin allow the skin surface to cool when the body gets overheated. Thermoregulation is also accomplished by the dilation or constriction of heat-carrying blood vessels in the skin. Immune cells present among the skin layers patrol the areas to keep them free of foreign materials. Fat stores in the hypodermis aid in both thermoregulation and protection. Finally, the skin plays a role in the synthesis of vitamin D, which is necessary for our well-being but not easily available in natural foods. Choices: - digestive system - pectins system - teleporters system - integumentary system A:
integumentary system

Q: Q: Which water from the equator mixes with cold water from the poles? Read this paragraph and choose the correct option from the provided answers: Water flows through all the world's oceans. Warm water from the Equator mixes with cold water from the poles. The mixing of warm and cold water makes the water temperature moderate. Choices: - spring water - hot - ice water - warm A:
A: warm

Question: Q: What is the scientific term for the dropping of leaves, fruits, and flowers, which led to the naming of an acid thought to play a role in the process? Read this paragraph and choose the correct option from the provided answers: Abscisic acid is misnamed because it was once believed to play a role in abscission (the dropping of leaves, fruits, and flowers), but we now know abscission is caused by ethylene. The actual role of abscisic acid is to close the stomata, the tiny openings in leaves that allow substances to enter and leave, and to maintain dormancy. When a plant is stressed due to lack of water, abscisic acid tells the stomata to close. This prevents water loss through the stomata. Choices: - ascorbition - affixation - ablation - abscission A:
Answer: abscission

*Question*
Q: Algae are like plants mainly because they contain what? Read this paragraph and choose the correct option from the provided answers: Algae are like plants mainly because they contain chloroplasts. This allows them to make food by photosynthesis. Algae are important producers in water-based ecosystems such as the ocean. On the other hand, algae lack other plant structures. For example, they don't have roots, stems, or leaves. Also unlike plants, some algae can move. They may move with pseudopods or flagella. Choices: - organelles - cells - cell wall - chloroplasts A:
**Answer**
chloroplasts

(Q).
Q: What are the mineral deposits that fill in underground cracks called? Read this paragraph and choose the correct option from the provided answers: Underground water can be heated by magma. The hot water moves through cracks below Earth's surface. Hot water can hold more dissolved particles than cold water. The hot, salty solution has chemical reactions with the rocks around it. The water picks up more dissolved particles. As it flows through open spaces in rocks, the water deposits solid minerals. When a mineral fills cracks in rocks, the deposits are called "veins. " Figure below shows a white quartz vein. When the minerals are deposited in open spaces, large crystals grow. These rocks are called geodes. Figure below shows a "geode" that was formed when amethyst crystals grew in an open space in a rock. Choices: - cores - currents - motherlode - veins A:
(A).
veins