Which is an example of weathering? a. river water carries sand and small rocks to the ocean b. waves crash on a cliff and turn it into sand and pebbles c. a landslide pulls mud and rocks down a hill d. sand builds up in a desert and forms dunes (sandy hills)

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.