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where did the sand in the sahara desert come from

The sand in the Sahara is a result of rock erosion and weathering. ... read more

how plants grow

The Life Cycle of Plants ... read more

people who study animals

There are many things about animals that can be studied. We study their anatomy, their behavior, and how they live in the wild. We also learn more about our own bodies, behavior, and development when we look at other animals. We study how animal life can have an affect on humans and how humans can hav... read more

what are whiskers

Find out how these specialised hairs help animals to sense their surroundings. ... read more