FOR ANATOMY PEEPS
Why do we have a circulatory system?
What are the main structures of the circulatory system?
What is in blood?
How does the circulatory system work (be sure to be specific about what the heart does too)?
How does the circulatory system work with other systems?

1)the circulatory system is present in our human bodies for the flow of oxygen through our body for respiration of cells

2)the main structures are

a)the blood vessels :

used for transport of blood with and without oxygen

b)the. blood :

it is the red fluid which contains the oxygen and is able to transport it

c)the heart it is used to pump the blood to through the body

3) blood is a red fluid containing of red blood cells ,white blood cells,plasma,platlets

a)red blood cells is used to transport oxygen

b) white blood cells is used to protect us from viruses

c) it is the liquid part which helps everything flow

d) it is used for sealing up injuries

4)blood is flown trough the veins and arteries until it reaches the heart and from there it is pumped to the lungs where it is oxygenated and goes trough the body

5)the circulatory system works with the respiratory system by taking oxygen from it and then passing it trough the body

pls gimme brainliest It took soon much time typing this

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."