How air enters from our mouth to toe?

When we breath air, it enters our trachea, which is the main passageway to our lungs. The lungs have something called bronchioles, which put that oxygen into tiny sacs and that air is delivered all across your body through arteries and veins! Vains reach to your toes, hands, and head, so they distribute oxygen everywhere.

In terms of the image below, the box on the top right is the example of the sacs of air in the bronchioles. The larger part of the image to the left is the overall respiratory system, and the arteries on the sacs of air are what deliver the air throughout the body.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.