In the mid-nineteenth century, a major pull factor in US interregional migration was the building of the Erie Canal.
the cold climate in the East.
the Gold Rush in the West.
the expansion of the railroads.
the overcrowding in the East.

ek = (m·v2) / 2

v - velocity of system after the collision

m = m1 + m2

ek = (m1 + m2) ·v2/2

ek = (200 + 250) ·2,32/2 = 450·5,29/2 = 1190,25 j

renewable resources- resources that can be replenished (such as trees)

nonrenewable resources- resources that are gone once they are used (such as fossil fuels)

producer-person who makes goods or provides services

consumer- person whose wants are satisfied by using goods and services

allocate- distribute

choice- option

(hope this ! )

i needed

explanation:

answer: my face

explanation: myusernamesthis should have beat kreekcraft