What is thought to be true about the three domains of living things?

a. they diverged from a common ancestor before the evolution of the main groups of eukaryotes.

b. they diverged from a common ancestor fairly recently.

c. they did not have a common ancestor.

d. domains bacteria and archaea evolved after the main groups of eukaryotes.

How do you date a sample of rock that you suspect as being one of the earliest on earth

Which statements about the fluid mosaic structure of a membrane are correct? select the three correct statements.which statements about the fluid mosaic structure of a membrane are correct? select the three correct statements.the framework of a membrane is a bilayer of phospholipids with their hydrophilic heads facing the aqueous environment inside and outside of the cell and their hydrophobic tails clustered in the center.because membranes are fluid, membrane proteins and phospholipids can drift about in the membrane.the diverse proteins found in and attached to membranes perform many important functions.the kinky tails of some proteins keep the membrane fluid by preventing the component molecules from packing solidly together.membranes include a mosaic, or mix, of carbohydrates embedded in a phospholipid bilayer.

In each transformation of energy , some energy what?