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A stamen is the name for male reproductive parts of the flower which consists of an <u>Anther and Filament</u>.
I belive they studied rocks because that is what geological stands for.However they also studied glaciers and ice caps for seeds that contained pollen. The prehistoric 4imes often help us understand out history.
Both have a sporophyte generation and gametophyte generation. Also both have pollination, sperm cells travel through tube to reach ovule, and fertilization of egg cell with sperm cell produces zygote
Answer:
"the presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects."
To break it down, harmful chemicals and other things go into the air and that is called pollution. I believe that you can also pollute the water when you put items like plastic and such in it.
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