I'm pretty sure that it's natural gas.
They're celled subsistence farmers, their farming practice is subsistence farming, where most of the product they grew or reared are for themselves and their families, they usually don't take the products to the markets for commercial purposes, instead those who do that are practising commercial farming.
Answer:
oxygen is common in them
Explanation:
ozygen is common in all of rhem
Answer:
they fixed nitrogen in plants affected from the eruption by enriching the soil.
Explanation:
