PLEASE HELP WILL GIVE BRAINLIEST !! 7. Fill in the blanks about the carbon cycle. Carbon in the atmosphere is in the form . Plants get it in their tissues from the process of . Animals get their carbon by . When plants and animals die, the carbon is returned to the earth by . Over many years, organic material in the soil becomes , which are very useful to humans for fuel. We attain oil from the earth by When we burn the oil, it's called , and the carbon is returned to the atmosphere as .​