Connexus U. S. history semester b exam review answers please im desparate

1:d

2:c

3:d

4:human factors, many and the demand. Geographic factors, a drought and massive wind.

5:c

6:a

7:b

8:a

9:c

10:b

11:c

12: no clue sorry

13:d

14:c

15:c

16:again idk sorry

17:d

18:c

19:c

20:a and b

21: a and d

22:c

23: the chinese/the immigration/the united states

24:c

25:c

26:b

27: idk

28:c

29:d

30:b

31:c

32:c

33: president/congress/nixon/americans

34:b

35:b and d

36:d

Explanation:

I failed the test and it gave me the answers but some like the ones i said didnt know it didnt give it to me.

crop rotation kepy different plants in the soil instead of once constintly. when switching out plants you have different nutrients being absorbed at different speeds and different roots growing differently therfore the spoil and water flow have to adapt and carry fresh nutrients to carry the constant changes that were going on in the soil.

c]extended voting rights to african americans