It’s really living environments but I didn’t have that option but please help me I can’t fail

During exercise heart rate increases to accommodate for the increased need of oxygen through out body as well as to increase stroke volume (force and rate in which blood is expelled to the rest of the body). After exercising the rate in which your heart beats returns to a resting state (decreases) to reflect the decrease in the need for oxygen throughout your body.

Explanation:

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

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