What is the span (number of years shown) of this timeline​

Which of the following is not a challenge to instituting sound global environmental policies? a. most changes are inexpensive and easy to implement. b. elected leaders who support unpopular environmental issues often are not re-elected. c. economic considerations outweigh environmental ones in many societies. d. there is no way to enforce international environmental agreements.

Dry land planting can benefit the environment by reducing the need for tillagate

Pls pls pls choose a city in ecuador, peru, or bolivia. look up all the information you can find about it. then write about the city of your choice in a report of 150 words. after you have finished your writing assignment, review it and correct any errors you find in punctuation, grammar, spelling, and the way you write your sentences. can you choose words with more exact meanings or more vivid descriptions?