School of Life Sciences | Ask A Biologist

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Lizards

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Challenge question

Aphids are plant-eating insects. A particularly tasty plant might have hundreds of aphids crowded on it. Many of the aphids are wingless, and they stay on the same plant for most of their lives. But some of the aphids have wings, so they can fly elsewhere if they sense that there are too many of them to share one plant.

What do aphids and tree lizards have in common?

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by volunteering, or simply sending us feedback on the site. Scientists, teachers, writers, illustrators, and translators are all important to the program. If you are interested in helping with the website we have a Volunteer page to get the process started.