Which of the following statements accurately describes the process of dating earth's history?
a. scientists use radiometric dating to determine the relative age of a new fossil.
b. scientists use relative dating to determine the absolute age of a new fossil.
c. scientists use radioactive isotopes to determine the absolute age of a new fossil.
d. scientists use index fossils to determine the specific years of age of a new fossil.

As a small change in a person's dna can cause a genetic disorder

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.

Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins