Answer:The oxygen-rich blood from your lungs is carried to the left side of the heart through the pulmonary veins. The heart pumps the blood to the rest of the body, where oxygen in the red blood cells moves from blood vessels into your cells. Your cells use oxygen to make energy so your body can work.
Answer:
Animals are made up of eukaryotic cells, meaning they have a nucleus which contains the DNA. :)
Refraction is the bending of light (it also happens with sound, water and other waves) as it passes from one transparent substance into another. This bending by refraction makes it possible for us to have lenses, magnifying glasses, prisms and rainbows.
Here you go, and i hope you have a good day too :)
A diverse community would be more resistant because firstly, the different animals can build immunity to the other animals diseases and sometimes only certain species will be effected by a certain disease. Instead of everything being wiped out, only a small part of the community will.
Hope this helped!