Give an example of how carbon can cycle through an environment

Carbon can travel from plants to animals and into soil. When plants and animals die then they decay into the soil and leaves carbon in the ground

C) electrons encircling a nucleus with neutrons and protons

The density of water is 1 g/cm cubed and in order for the pebble to sink its density has to be greater than the density of water and in order for the twig to float its density has to be less than the density of water