When do scientists believe life originated on earth? a.3 to 4 billion years agob. 600 million years agoc. less than 6,000 years agod. over 5 billion years ago

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

Where can a dna be found in a prokaryotic cell

What happens when water’s salinity increases? mass decreases. freezing point decreases. buoyancy of objects decreases. the amount of dissolved minerals decreases.