Short word for what surrounds, supports and protects a plant cell

Which of these has happened to your food by the time it reaches your small intestine? a. all the macromolecules have been broken down completely. b. lipids and starches have been partially broken down. c. starches and proteins have been partially broken down. d. proteins and lipids have been broken down into subunits.

What is the difference between topsoil and clay?

Many birth-control pills release a constant amount of synthetic estradiols and progesterone for 21 days. true or false