I believe the answer is D. Yucatan Peninsula because in that area sinkholes have been found. Hope this helped you out and have an amazing day!
Answer:
The answer is B) Tests of a newly developed, inexpensive pesticide have shown it to be both environmentally safe and effective against the insects that have infested cotton crops.
Explanation:
B) Clearly demonstrates that that an inexpensive way of dealing with the problem will fix it quickly and lead to an increase in production in other countries which will drop the prices again.
1. both traded goods to each other or other.
2. Both grew there own foods on there farms.
3. Both ate rice.
I believe it is written constitution so B.