Practice using commas as you learn some incredible facts about blood.
Directions: Add 9 missing commas to the sentences below. We’ve done No.1 for you.
1. Actually a muscle, your heart pumps blood through your body. The human heart is the size of a fist, but other creatures’ hearts can be as big as a piano or smaller than a pencil point.
2. Human blood is red but other animals have different-colored blood. Spiders have light-blue blood and some worms have green blood.
Been there YB/Shutterstock.com
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3. Scientists have shown that a big laugh can help your blood flow so funny jokes are good for your heart!
4. Human blood has gold in it. However it’s a tiny amount so you shouldn’t expect your next paper cut to make you rich.
5. Vampires aren’t real but there are plenty of blood-sucking animals in nature. Fleas drink blood and female mosquitoes need blood to make their eggs.
6. Blood travels through tubes called vessels. As a matter of fact you have 60,000 miles of blood vessels inside your body. Amazingly that’s enough to go around Earth more than twice.
