Susan was traveling in an airplane. she looked out of a window in the airplane and saw clouds in the sky. why could susan see clouds to the window of the airplane?

Particles vibrate in a rigid structure and do not move relative to their neighbors.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.