Answer:
1. Obtain two identical containers and dry sand.
2. Shape equal amounts of sand into a "slope on the side of" each container.
3. Spray water on the sand in one container. The sprayed water represents "rainfall"
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4. In the other container, "place ice cubes to melt on the sand. This represents snow or glaciers."
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5. Observe and record the changes in the sand.
6. Analyze differences between the two containers.
Explanation:
Mine hasn't been graded yet but I'm pretty sure this is the right answer. I'll come back once it's graded and say.
Answer:
Active transport.
Explanation:
The kidney uses active transport to move these substances from the nephron to the renal vein because these substances did not moves from the nephron bowl to the renal vein through simple diffusion so for this purpose active transport is used in which energy is spent in order to move the substances from one region to another so we can say that kidney must use active transport to move reabsorbed substances from the nephron to the renal vein.
The correct answer is letter C.
Bryophytes have biflagellate gametes and cuticle. The cuticle serves as the covering of the soft tissue of the plant which provides protection and prevents damages on the walls of the plants. The biflagellate gametes develop also as a form of protection as well. These plants have an aquatic ancestry because of their dependence on water for reproduction and survival.
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Answer:
D, think of chemical changes. When iron rusts it is chemically changed. The other answers are a change in form or a property of iron.
