Which prokaryotic organism shows up as the earliest fossils? asap plz

1#archaea
2#echoinoderms
3#algae
4#cyanobacteria

Enzymes are proteins that speed up reactions by providing an additional energy source supplying additional molecules for the reaction removing inhibitors that slow down reactions lowering the amount of energy required

Select the word from the list that best fits the definition a system made of 25 satellites

How is the carbon cycle related to global warming ?