What's a pluton?
a. a body of igneous rock that forms within earths crust
b. a body of igneous rock that forms along vents in the ocean floor
c. a body of igneous rock that forms from cooling lava on earths surface
d. a body of igneous rock that form as a result of intense heat and pressure

Explain the importance of producers, primary consumers, secondary consumers and decomposers in an ecosystem.

Structures in cells that carry out specific functions.

The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community