Normally a 10× drop for each trophic level, so I'd say 2,000 kilocal.
A Cinder Cone Volcano. It forms with an explosive force and when layers of debris a ash accumulate.
Answer:
Meteoric impact
Explanation:
An impact crater is usually defined as a circular depression or large scale pit that forms when any meteorite hits the surface of planet or moon or any other astronomical object. This causes immense destruction, wiping out a large number of area. The size of the crater depends upon the size of the meteorite or asteroid. For example, the Barringer crater, which is formed due to the meteoric impact on the earth. This crater is located in Arizona and is primarily comprised of a mineral, known as stishovite, which forms under the condition of extremely high pressure, that is generally caused by a high-speed impact.
