With a constant mass of gas, a process takes place in which the pressure is always proportional to the volume. It is known that the initial gas pressure
Daphnia feeding on them were placed in a vessel with planktonic algae. Thereafter, the number of algae decreased, but the production of algal biomass (measured by the rate
If an airplane with a running engine is standing before acceleration, then the point on the propeller blade moves in a circle at some distance from the r-axis,
For the existence of life on the planet, the following conditions are necessary: – the atmosphere in which there is oxygen; – ozone layer that protects against ultraviolet