The most common elements present in organic compounds are carbon, hydrogen, oxygen, and nitrogen.
Cold air will underlie warmer air at higher altitudes. :^)
Hope this helps!
Answer:
Hypersensitive response
Explanation:
<em>The hypersensitive response is a defense mechanism developed by certain plants in response to the invasion of pathogens. </em>
<em>This mechanism features include the rapid death of cells and tissues surrounding the infection site so as to limit the invasion of the pathogens as pathogens require living cells in order to continue spreading.</em>
