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All mammals have hair in there body because they need to keep themselves warm when it's cold, we are warm blooded as the rest of the mammals. all mammels have hair exept the water mammels like whales and dolphins but they keep warm there bodies by eatins a lot of amilals and get layers of fat that will keep them warm, but etherway they have at least a little bit of hair one point during there lives. 

Hummans have hair in almost every part of our body, some places that don't include our lips, the palms of your hand and the souls of your feet. But our hair is different in each part of your body. One type of hair is the lauguno hair, wish is the hair babies are covered with.Another type of hair is the vellus hair wish is the hair moat of your body is covered with, those hair is the one in your legs and arms and mesures less than 1 inch,And the 3rd type is the terminal hair wish is longer than an inch and grows in the top of your head and other places.

how doe your hair grow? first before you are born tiny foccils are formed inside your skin, foccils are like roots but for hair. you have a ton of focills you have 100,000 yust in your head alone. AT the bottom of each foccils you have thousands of cells with are dividing each second , as they divide and are craetedb the old ones are pushed out and out of you head this makes hair

The earth is divided in 24 time zones. Time zones go north south pole  to north pole, they are meridians, They are 360 that are degrees. Thats why they are different times. They are the same minute but different hour to the west of it  and highest hour to the east. Smaller goes to west  and bigger to east. The earth rotates. Thats why the hour changes. Like the sun is up it has a different hour than when the moon is up. The earth soins 15 degrees per hour. The sun rises in L.A. at the same minute than N.Y. when it is getting dark.

Our Immune system is the system that helps us fight off germs and viruses, if Our immune system wouldn't exist, we would be sick more often.

When you have a disease you already had, your immune system remembers and knows how to fight it off.

Inside the fish theres something called the lamellae (The lamellae is an organ that the fish has to help it breathe.) and theres tiny blood cells and theres a blood vessel that bring the blood really close to the surface. When water goes into the gills,oxygen goes to the fish. When blood carries oxygen to the lamellae it doesn't have a lot of oxygen. Blood swims through the blood vessels and water swims the opposite way to the lamellae. That way, blood swims through the gills but it was a little less oxygen than the water around it. When the blood can't hold any more oxygen it swims its way to the heart.  

To get oxygen the fish just moves with their mouth open or take a gulp of water  

The bigger the lamellae is the better blood can hit contact with water and the fish can get more oxygen

The lamellae has evolved so much to have the most surface area it can have 

If you have a fever, it might be that your body is fighting of a cold of a virus. So the fever actually helps you sometimes.

While your body is fighting the germs that may cause you an Illness, you may feel tired, down, and sick.