The partial pressure of O2 in the atmosphere at sea level is 21.3 kPa. What is the partial pressure of O2 on the top of a mountain, where the atmospheric pressure is 62.7 kPa?Assume the mole fraction of O2 remains constant.
[Atmospheric pressure at sea level is 101.3 kPa.]
У прісноводних гідрах може паразитувати амеба:
Які органи чуття характерні для нематод?