1. What kind of gas is unique to the planet Earth?
2. What kind of gas is common to all
living organisms?
3. Differentiate a high-density wind from a
low-density wind and explain how air
flows
4. Differentiate the local winds: Land and
sea breeze. Give at least 2
explanations.​

1..Earth's atmosphere is roughly 78 percent nitrogen and 21 percent oxygen, with trace amounts of water, argon, carbon dioxide and other gases. Nowhere else in the solar system is there an atmosphere loaded with free oxygen, which is vital to one of the other unique features of Earth: life

2..Oxygen is a gas that is needed by many animals in order to survive. Humans inhale oxygen and exhale carbon dioxide. Air- The leaves of the plants take in carbon dioxide from the environment they give off oxygen, which animals need to survive.

3..

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.