Below are 2 sets of organisms: a bird and a butterfly and a horse and a zebra. Which 2 organisms are more closely related? * Help Me I will give 70 points!!!

Tlymphocytes mature in the? a. thyroid gland. b. bone marrow. c. spleen. d. thymus.

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

When elements that form a mineral dissolve in hot water, they form a mixture called a(n) a)geode b)vein c)evaporation d)crystallization e)magma f)lava g)solution h)gem