<span>The largest and most inclusive of Linnaeus's taxonomic categories is the kingdom</span>
Convection : Warm air rises and cold air sinks, you have a cycle there :D
You can experience it on the beach shore. Since water has a high heat capacity ( it takes longer to heat up ) and the sand get hot quickly, the air on the shore gets warm and rises. When the air reaches to certain elevation (or meet the temperature of the beach), it gets cooler and sinks, cold air from the beach blown to the shore.
This attracts male wasps and they can pollinate the orchid.
All proteins are composed of amino acids. Each amino acid in a protein is linked by chemical bonds. Enzymes are composed of chains of amino acids. Enzymes are a type proteins that turn a cell into a highly developed miniature factory carrying out chemical reactions very fast.