Mainly Italians and Romans
Early organisms lacked skeletons and other hard structures that are most likely to be fossilized.
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Answer:
I would increase the amount of organic matter in my soil by adding compost, aged animal manures, peat moss, and cover crops. This is for improved soil structure that will allow plants to grow on easily. Adjusting the soil fertility will make the farmland fertile.
Water planishes the land
water keeps civilization alive
life depends on water
Investigate past climate and atmospheric changes