The pollen grains contain sperm which will fertilize the egg and create a seed to sprout the next generation of plants. The main male part is the stamen. It is divided into two parts: the anther and the filament. The anther produces the pollen grains that contain the sperm needed for fertilization.
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a regulatory substance produced in an organism and transported in tissue fluids such as blood or sap to stimulate specific cells or tissues into action.
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earth sun
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Thp90% of the earth uses solar energy
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it protects aquatic life from changes in air temperature
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Unequal heating of the earth
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Warm air rises at the equator and moves towards the poles. At the poles, the cooler air sinks and moves back to toward the equator
