Earth’s first life forms were aerobic cyanobacteria photosynthetic chemoautotrophs

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

Mike has a problem with his testosterone. he is unable to produce enough. which will most likely be affected by his inability to produce testosterone? check all that apply.

What type of plant is good for a bioassay and where can i buy it? i only have a month.