One, a lot of mass extinctions are based on theories by scientist. Two, they all caused major changes in the Earth's systems (Ex. ecology, atmosphere, surface, and waters). Three, they all have theories on what caused it.
Also this is obvious but in all mass extinctions they wiped out a lot of lifeforms, 90% of anything that has EVER lived on the Earth is extinct.
Hope this helps! :-)
Answer:
they both are solid at room temperture
Explanation:
Answer: It is a parasitic relation ship
Explanation:
Coal
Coal is a combustible black rock that is formed from prehistoric plant remains. Coal is formed from the anaerobic decomposition of dead plant matter such as trees, ferns, mosses and other marsh plants that grew on the earth surface over millions of years ago. Coal is composed largely of carbon and is usually burned as a fuel.