Across The World Crossword

Rainfall affected by atmospheric pollution that can cause environmental harm.
A body of air with horizontally uniform temperature, humidity, and pressure.
The presence in or introduction into the air of a substance which has harmful or poisonous effects.
The force exerted onto a surface by the weight of the air.
The degree to which the ambient air is pollution- free, assessed by measuring a number of indicators of pollution.
The layer of gasses that surround the earth.
An instrument measuring atmospheric pressure, used especially in forecasting the weather and determining altitude.
The release of a colorless, odorless and non-poisonous gas formed by burning wood or breathing.
Cloud forming wispy filamentous tufted streaks ("mare's tails") at high altitude.
The average weather in a location including the temperature and amount of precipitation. (rainfall)
A change in global or regional climate patterns attributed to increased levels of atmospheric carbon dioxide.
The boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low- pressure system.
The process by which water vapor in the air is changed into liquid water.
The transfer of heat by the circulation or movement of the heated parts of a liquid or gas.
The spin of the Earth causes air to moved in a curved path, not in a straight line.