The Rocky Mountains is the largest mountain system in N.A
Answer:
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Explanation:
By creating high-paying jobs and providing the raw materials essential to every sector of our economy, minerals mining helps stimulate economic growth. These domestic raw materials—along with recycled materials—were used to process mineral materials such as aluminum, copper, and steel worth $766 billion.
<span>The ecological pyramid is the smallest at the top beacuse there is ten percent loss of energy, in the form of food, at each trophic level, and the number of organisms of the top most level are the fewest. </span>
Answer: Anaerobic respiration or Fermentation
Explanation:
When we are engaged in intense physical activity such as running or riding a bike, the muscles need energy to function and they get this from aerobic respiration.
They will quickly run out of the oxygen required to sufficiently use aerobic respiration however and will turn to anaerobic respiration which can produce energy in the absence of oxygen.
As the body uses anaerobic respiration however, lactic acid is produced and builds up in the muscles. It is this lactic acid that leads to the muscles feeling sore.
Tillage is a threat to the soil because it ruins the protective topsoil. hope it helps :)
