fossil fuels
It is a black sticky and its a liquid.
Oil
tree
yes
diamond
yes
salt
bread
manmade
black and used cook
coal
wind
yes
iron
yes
gold
natural
water
natural
------- gas
natural gas
oil
no
oil
yes
animals
natural
is sunlight a fossil fuel
no
sunlight
yes
trees
no
shoes
chair
manmade
is wind a fossil fuel
no
water
yes
sunlight
no
trees
natural
wind
natural