Life CyclesClick on the underlined words to view the

life cycle of that organism.

Humans Butterflies

Crickets Frogs

ChickensElephantsOak Trees

HumansHumans are born as babies

As babies grow and change, they become children

Children continue to grow and change into adults

Over time adults age and continue to change

Over time humans do change – they get

bigger as they get older – but they

don’t go through any really big

changes – like growing new arms or wings.

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Butterflies begin life as an egg

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ButterfliesCaterpillars hatch out of eggs and begin eating plants

Out of the caterpillar comes a winged butterfly

As the caterpillar ages it begins to change. It spins a cocoon where it begins to make large changes

Butterflies go through big changes

during their life cycle.

Crickets are hatched from eggs but from birth look very similar to the adults. They do not go through a big change.

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Frogs begin life as eggs

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FrogsThe eggs hatch into tadpoles

Over time, the tadpoles grow legs and start to breath air

Finally, the legs grow and the tail shrinks

Frogs, like butterflies, go through

big changes during their life cycle.

Chickens begin life as an egg

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ChickensWhen the chick hatches it is covered in soft feathers and cannot flyAs the bird

becomes an adult it becomes larger and the feathers change

Chickens, like humans, go through

small changes during their life cycle.

Elephants do not change much as they go through life. They get bigger, the males

grow tusks. But the adults look very much like the young.

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Elephants

Oak trees begin there life as acorn seeds

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Oak TreesAs the seeds open the seedling begins to grow. The leaves look very similar to the leaves of the adult tree

The adult tree looks very similar to the seedling only bigger