The rich black soil of which of the following regions allows the growth of many crops?
1)uzbekistan
2)ukraine
3)armenia
4)siberia

Food can come from sustainable or unsustainable resources. why has the united nations suggested that bugs could be a better source of food than animals like pigs or cattle?

Which of the layers of the earth has the following three characteristics? i. it is made of molten rock. ii. it has currents that are constantly moving. iii. earth’s plates float on top of its currents.

What is the relationship between groundwater and aquifers?