The table below lists a number of substances that are common on planet Earth. What are the five most abundant substances present in the Earth's atmosphere? Argon Silicon Dioxide Oxygen Ozone Carbon Monoxide Nitrogen Water Carbon Dioxide Sulfur

The order of elements by volume-fraction (which is approximately molecular mole-fraction) in the atmosphere is nitrogen (78.1%), oxygen (20.9%), argon (0.96%), followed by (in uncertain order) carbon and hydrogen Explanation: google.

nitrogen

oxygen

argon

carbon dioxide

water  

Explanation:

it is correct on study island

the backbone of the dna and rna compound is sugar phosphate.

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.