Which layer of soil is most likely of greatest importance to plant growth?
a. o(organic matter)
b. a(topsoil)
c. b(subsoil)
d. c(parent rock)

What is a small water source like a stream or brook?

In a constitutional monarchy, the king or queen a. is a symbol of the nation b. runs for office c. controls the legislative branch d. has absolute control

Which of the layers of the earth has the following three characteristics? i. it is a solid outer layer. ii. it is between 3 and 30 miles thick. iii. it is separated into plates. a. the outer core b. the inner core c. the mantle d. the crust