Answer:
Explanation:
Yes, the forces affected the rocks. This is because there has been friction rubbing against the rock and wearing it down. This is called weathering.
Answer:
1. Sorting. The simplest way to separate mechanical mixtures is by sorting.
2. Floating. Sometimes, parts of a mechanical mixture will float on the surface.
3. Settling. Sand and cocoa powder both settle in water.
4. Using a Magnet. Some metals such as iron and steel are attracted to magnets.
5. Using Sieves and Filters.
6. Dissolving.
Explanation:
Mixtures can be separated using a variety of techniques.
Chromatography involves solvent separation on a solid medium.
Distillation takes advantage of differences in boiling points.
Evaporation removes a liquid from a solution to leave a solid material.
Filtration separates solids of different sizes.
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Answer:
It lacks a wall thus use the contractile vacuole to collect and expel excess water from the cell.
Explanation:
- The contractile vacuole regulates the quantity of water inside a cell through a process known as osmoregulation.Osmosis constantly drives water in the cell since it is enclosed by a semipermeable membrane that can not keep the water out thus it is needed to prevent rupturing of the cell due to excess water in the cell.
Answer:
B
empty part
Explanation:
btw its chemistry question
100% alcohol is extremely flammable and evaporates very fast. It may just dehydrate the microbe and put it in a state where it can still cause harm. 70% will stay on a surface long enough to actually kill harmful microbes.
