Weathering is:
a)when the weather changes
b)is the breakdown of rocks by a chemical, physical or biological process
c)when materials are moved by wind and water
d) when soil and rocks are worn away and moved to a new location by wind or water

Name the part of the the brain labeled "e".

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?