Unit Test Review Answers Which important event in Earth’s history occurred during the Jurassic period?

The first birds emerged on Earth.
Mammals were in search of food.
Animals with shells emerged on Earth
Treelike ferns first began to grow and populate.
Answer is The first birds emerged on Earth.

Which muscle is responsible for inhalation ?

Why were the results whit just water so much different than the trials with the detergent ?

18. determine whether each stateme blank space given. ach statement is true (t) or false (f). place your answer in the 8. when a cell is put into an isotonic solution, individual wat put into an isotonic solution, individual water molecules cannot move back and forth across the cell membrane. d. when a cell is put into a hypertonic solution, there is a net movement of water molecules across the cell membrane into the cell. c. when a cell is put into a hypotonic solution, there is a net movement of water molecules across the cell membrane out of the cell. d. the movement of any solvent across a semi-permeable membrane is called osmosis. e. carrier proteins have the ability to change shape and physically move molecules across the cell membrane. f. in facilitated diffusion, the concentration of the molecules to be moved across the cell membrane is higher inside the cell.