Answer:
Explanation:
Osmosis is a passive process and happens without any expenditure of energy. It involves the movement of molecules from a region of higher concentration to lower concentration until the concentrations become equal on either side of the membrane. Any solvent can undergo the process of osmosis including gases and supercritical liquids.
1. Only use the Bunsen burner when specifically instructed to use during an experiment authorized by the instructor.
2. Never turn on the gas unless instructed by your instructor.
3. Always light the match or lighter before turning on the gas.
4. Always inspect the Bunsen burner, tubing, and gas valve before using the burner.
5. Always follow proper procedures for lighting and using the Bunsen burner.
6. Tie back long hair and don’t wear loose long sleeve.
These are some and good luck,!
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The three last ice ages were in the periods between 450-420 mya, 360-260 mya, and 34 mya to present.
Explanation:
The ice caps on the poles, or at least one of them, form when there is a global cooling off. The temperatures drop across the planet, and that results in the poles and the surrounding areas to start freezing. As the ice spread, ice caps are formed. The ice caps can be limited only in the Arctic and Antarctic circle, but they can also move much further into the lower latitudes, all depending on the severity of the climate conditions.
- In the last 540 million years, the Earth has experienced three periods of global cooling, or ice age.
- The first of these periods was the Andean-Saharan ice age, lasting between 450 and 420 mya.
- The second has been the Karoo ice age, lasting staggering 100 million years, from 360 to 260 mya.
- The most recent is the Late Cenozoic ice age, starting from 34 mya and still going on, thus we are living in an ice age at the moment, just that we are not in a period of glaciation.
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