The ions can enter or leave the cell by the instrumentality of a pump. Option A
<h3>What is cell?</h3>
The cell is the smallest unit in taxonomy. It is the minutest level of life and all organisms are composed of cells. The cells are capable of carrying out all of their own activities.
The ions can enter or leave the cell by the instrumentality of a pump. This is how the sodium and the potassium ions are able to enter into the cell.
Learn more about ion pumps in the cell:brainly.com/question/11758969
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Answer:
Variations in the sun's energy reaching Earth
Changes in the reflectivity of Earth’s atmosphere and surface
Changes in the greenhouse effect, which affects the amount of heat retained by Earth’s atmosphere
Explanation:
This is called a joint. A place where two bones meet or come together is called a joint. The two bones are separated by cartilage to keep them from rubbing together.
The plant should be de-topped at least 4 cm above the surface of the soil.
The stump of the plant is tightly fitted with the apparatus.
Tube is filled with water, not completely but at least one-fourth
Remember to note the initial water level.
Note the final water level and draw interference by calculating the difference between two levels.
