Do you have any choice answers? As far as I know, the organisms that appeared first was micro-organisms. Hope this helps.
Answer:
The fact people don't want to change may be the greastest impact. Humans want answeres quick and easy we are willing to destory the earth for our ways as we have been for 1000ths of years. We never change we evolve but don't change our ways.
Explanation:
Hope This Helps
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~Zero~
Independent variable: The difference in the amount of water the plants are fed. Dependant variable: the health of the plants . Control variable: temperature, amount of sunshine, type of plant amount of co2,
3)LIVER has eukaryotic animal cell
