The tiny openings through which evaporation takes place in the leaves of plants are called stomata.
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Hydropower is practical used in business, home, and schools because its a back up power during electricity outages
Answer:
there are 12 marbles. the probability of getting a yellow would be 2/12, the probability of drawing a red is 4/12, and the probability of getting a black is 3/12. (i think,, dont quote me if im wrong!)
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Explanation:
Answer:
Sometimes molecules cannot move through the cell membrane on their own. These molecules need special transport proteins to help them move across the membrane. Facilitated diffusion is the diffusion of substances with the help of transport proteins in the plasma membrane. These special proteins are called channel proteins or carrier proteins, and they are attached to the cell membrane. In fact, they go through the cell membrane, from the inside of the cell to the outside. Facilitated diffusion is used for molecules that cannot diffuse rapidly through cell membranes on their own, even when the molecules are moving from high to low concentration areas. An example is the sugar plants and animals use for energy, called glucose. Even though facilitated diffusion involves transport proteins, it is still passive transport because the solute is moving down the concentration gradient so it does not require the use of cellular energy.
