CAUSES OF GLOBAL CHANGE The diagram is a simplified model of four Earth systems-the atmosphere, hydrosphere, biosphere, and geosphere-and the changes that
their interactions cause
Amosphere
Biosphere
MEASURABLE
CHANGES IN
THE EARTH
SYSTEM
Sydrosphere
Geosphere
Adapted from Understanding Global Care UC Berkeley

Imagine a person stepping on a pin and pulling his or her foot away. look at the reflex arc of this scenario below. which statement best describes the image? a)the sensory nerve carries the signal from the effector to the interneuron, and the motor neuron carries the signal to the receptor. b)the motor nerve carries the signal from the receptor to the interneuron, and the sensory neuron carries the signal to the effector. c)the sensory nerve carries the signal from the receptor to the interneuron, and the motor neuron carries the signal to the effector. d)the sensory nerve carries the signal from the receptor to the motor neuron, and the interneuron carries the signal to the effector.