C. amount of rainfall
The amount of rainfall is an abiotic factor (non-living) which is necessary for the growth of plants. The water from the rainfall is necessary for the large scale natural irrigation of an agricultural land, forest, meadow or grassland. The water enters into the soil and through the roots the water is absorbed by the plants.
If a region receives very low annual rainfall then the region may experience desertification. The soil will become compact and dry which cannot support the growth of plants.
If a region receives adequate rainfall then the soil will hold water it will remain fertile to support the diversity of plants.
Water Content of Epidermal Cells
Temperature: Increase in the temperature causes stomata to open
The answer is c because some plants can die from too much water
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the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.