4. Heat always flows (a) from a colder object to a hotter object (b) from a hotter object to a colder object (c) in both the directions
(d) heat never flows from one object to other.

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How much energy moves onto the next level, in an energy pyramid

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of