Answer: cancer
Explanation: I am a scientist
In order to "invest" in later stages to get more energy per glucose molecule. It could also be because that is how it is done, it wouldn't be as efficient unless these stages were performed.
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Answer:
The sunflower plants shown are the same species. The differences in
height among the plants is an example of variation
Explanation:
Variation entails difference in a condition which is exactly what happened as regards sunflower plant with different height
Plants and animals provide food for humans. Plants cycle the air for humans too.
It is threatening the Arctic Tundra Biomes By Melting The Ice....Love