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Animals contribute water vapor back into the atmosphere by respiring, breathing out water vapors that rise to the atmosphere. They're perspire to prevent overheating; during this process, water is excreted through the pores and evaporates off the skin, cooling the animal by absorbing the external heat.
Your undertone is neutral since it is a mixed of cool and warm undertones. Cool undertone appears to be blue or purple in light while warm undertones appear green or olive in natural light. Knowing the right undertone will help you to know what the right foundation you'll choose.
D. all of the above
this sounds a lot more like geography than biology by the way
Cardiorespiratory endurance is the ability of heart and lungs to absorb, transport and utilize oxygen over extended period of time during physical exertion.