Which of the following is a substance?

A) smoke
B) salt
C) granite
D) brass

smoke it is smoke answer a

B) salt

Explanation:

It is considered a substance because it has a uniform and definite composition.  Salt easily dissolves in water, but salt water cannot be classified as a substance because its composition can vary.

Hope this helped!!!

that is wrong, its not thymus.

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls