Weathering that does not alter the chemical composition of the rock is called
a. chemical weathering.
c. biological weathering.
b. physical weathering.
d. acid weathering.

Which system revise and send electrical signals throughout the body

Each pair of clay balls represents two planetesimals. if each planetesimal is composed of the same material and is separated he the same distance, which pair experiences the frayed gravitational attraction?

What advantage does a crop that undergoes vegetative reproduction have over plants that start from the seed? 1points a they store nutrients. b they can travel farther. c they experience more genetic variation. d they only occur in high-resource environments.