Air at 30 c (86 f), total pressure is 750 mmhg (100 kpa), with a complete humidity of 20%. calculate
1. relative humidity percentage
2. moisture contents
3. the sub-pressure of water vapor in the air
4. dew temperature

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.

Why is the bottom layer of a trophic pyrimid the