The last one is right answer i think
Anything in the environment that can cause a mutation is called as a mutagen.
Environmental mutagens include:
radiations, chemical, infectious agents, extreme heat.
The environment we live in has a real impact on whether we experience genetic mutations. The quality of water we drink and the air we breathe can actually effect the integrity of our DNA. Our bodies are designed to correct any mistakes, but dangers from the environment can increase our chances of ending up with a mutation.
Energy decreases as you go from the bottom of the food pyramid (plants) to the top of the food pyramid (carnivores)
The processes that turns sediment into sedimentary rock is the compaction and cementation of sediment. Hope this helps!
it would be until they reach a mutual temperature.