The correct answer is D. Most flower petals are bright colors in order to attract organisms like bees or hummingbirds for pollination
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With the beginning of the middle proterozoic comes the first evidence of oxgen build up in the atmosphere. with is catastrophe came eukaryotic forms. these include multicellular algae, and toward the end of the proterozoic the first animals
The acidity of the soil-peat inhabits diversity of plant species compared to marshes.
An important distinction to bogs would be that marsh soils are more typically neutral in the pH scale, to slightly more basic.
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