20% salt 10% salt
• Water Molecules
Using the image above:
a. describe the tonicity of the
solution inside the cell
b. describe the net
movement of water
c. if the salt (Na+Cl-) could
move across the membrane,
which direction would it
move?

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers