<span>The best surface for a beginner to run on is smooth and soft so that it can cushion the stresses of running. For a more advanced runner, hills could be beneficial in improving their training and cardiovascular endurance.</span>
B. Cortisol
Cortisol is the primary horomone responsible for psychological stress.
Answer:
Some things to consider: safety, Money, and specific muscles you want to work.
Explanation:
Free weights cost less money. People have used free weights on a weight bench and have not used a spotter. The free weights have fallen on them and killed them. A universal machine is more expensive. You can not drop a universal machine on yourself. The machine's aslo require little to no maintenance. A machine will basically always hit certain muscles, not due to you but down to how the machine is made. However free weights allow you to hit a larger variety of muscles as it's not isolated.
Well, burning coal, fuel, gas or even garbage; creates gaseous effluents, <span>usually subject to certain regulations that establish the limits of each pollutant.
</span><span>Solar, wind power and other technologies of energy generation, do not generate gaseous effluents.
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Conserving coal, fuel, gas and garbage(that's why we need to also recycle), conserving these certain things, will help reduce air pollution by a LONG run.
Also, changing to solar, wind power, and using other technologies will help also help reduce air pollution.
Hope I helped :)
The __ circulation disperses oxygen rich blood throughout the body. ____ blood cells bring oxygen to cells and take carbon dioxide away. ___ transfer waste-filled blood from tissues into the pulmonary circulation. The main organ of the respiratory system is the ____.
