They are the simplest plants |
and are not well adapted to
terrestrial life.​

Which flexible structure that supports the nerve cord and led to the backbone

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.

Ascientific idea becomes valid when it is what?