In which ways did the environment affect the diet of Northwest Coast Indians? Check all that apply. Northwest Coast Indians hunted buffalo, which provided an abundant supply of meat.
A variety of seafood from oceans and rivers was available.
A limited amount of food was available, forcing Northwest Coast Indians to get more through trade.
Northwest Coast Indians could relax during the winter months and not have to search for food.
Meadows and forests provided berries and fruit.

the perimeter of a triangle is 69 cm. side a is 5 cm shorter than side b. side c is twice as long as side a. find the length of each side. i need to know how to do it in 2 equations.  

equations:

a = b-5

c = 2a

a + b + c = 69

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.