Answer:
d. herbicide-resistant soybeans
Explanation:
The earliest of civilizations were based around river valleys. This allowed them to irrigate fresh water to their crops allowing for better farming and therefore, bigger and better civilizations.
Answer:
The answer would be A.
Explanation:
It would be a because comets orbit around the sun and has a very small chance at crashing into the Earth.
ANSWER: commodity money
EXPLANATION: The commodity money is the hardest to travel with as it does not have any fixed value and has only the value of the commodity for which it is made. The commodity money exchanges commodities such as gold, silver, copper, salt, peppercorns, tea, large stones, decorated belts, shells, alcohol, cigarettes, cannabis, silk, candy, nails, cocoa beans, cowries and barley.