Which statement is false? a) humans have an endoskeleton. b) exoskeltons are on the outside of an organism's body (example: lobster). c) fish have exoskeletons. d) a worm has a hydrostatic skeleton.

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)

Why is the structure of molecule important to its function?

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.