Answer they crossed a land bridge to get to america.
Explanation:
B ) led to a decrease in cotton prices
So farmers had to move off to have a better economic and social opportunities in the cities of the North and west
Answer:
Nitrogen is so vital because it is a major component of chlorophyll, the compound by which plants use sunlight energy to produce sugars from water and carbon dioxide (i.e., photosynthesis). It is also a major component of amino acids, the building blocks of proteins. Without proteins, plants wither and die.
Construction relationships as well as destructive that’s the answers
