Which three of the following are major functions of proteins *just type the number*
1- store energy

2- act as chemical messengers

3- major components of cell membranes

4- receptors of chemical signals

5- source of fibers

6- major component of skeletal muscle

i would go with b

cytokinesis occurs after telophase so that eliminates d

and the entire reason for cytokinesis is for cellular reproduction

a covalent bond, specfically triple bond

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.

the correct answer to this question is #5