Question

Match each item to the sphere of Earth in which it is located. ozone layer fossils rust (iron oxide) cyanobacteria

Answer 1

The oxygen in the upper atmosphere combine to form ozone layer (o3) that allows to colonize surface water.

Explanation:

The fossil stomatolites are formed at about 3.0 ga laminated bacteria. they form the sediments to fall into a thin film of bacteria, these bacteria binds with the sediment and grows through it.

Cynobacteria uses water, CO2 and sunlight to create their own food and produce oxygen as a by product. The significance of stromatolites is that they are earliest fossil evidence life on earth.

They were first organism to photosynthesis and produce oxygen.