What did cyanobacteria produce that made life possible?

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

The idea that all living things are made up of cells is considered scientific law. this means the idea is an emerging scientific idea that has a logical explanation. has been tested with similar results at least twice. is supported by scientific consensus and a large amount of evidence. has been rejected only once by the scientific community

Describe how a student should adjust the microscope to see the cells on a slide more clearly?