34 Life Cycles-Low

Life Cycles Written by Ned Jensen

Introduction Living things change. They go through stages called life cycles. Plants and animals both have life cycles. During their lives, they grow and make new living things. These new living things will look like the plant or animal that made them.

Dogs, cats, cows, tigers, and humans are all mammals. They all have the same life cycles. Birds, frogs, and snakes are not mammals. They each have different life cycles. Plants and animals do not have the same life cycles. In this book you will learn about kinds of life cycles.

Human Life Cycle Let's look at your life cycle. You began as a tiny egg. The egg grew inside your mother It became an embryo. You grew until you had arms, legs, a head, and other parts. You began to look like a tiny person. Babies often take nine months to grow before they are born.

As a baby, you did not walk or talk. You were called an infant. You stayed in this stage for a couple of years. Then you entered another stage You entered childhood. You will stay in childhood for about ten years. After childhood, you will go through two more stages. The last one is the adult stage of life.

The adult stage is your longest stage. You are an adult for the rest of your life. New babies can be made just before and during the adult stage of life. Do You Know? The oldest person was a French woman. She lived 122 years. Word Wise A mother can have more than one baby. 2 babies = twins 3 babies = triplets 4 babies = quadruplets 5 babies = quintuplets