Life in the ocean Diatoms are tiny plants that live in the ocean. They can be seen only with a microscope. Diatoms are green plants, and make their own food. Tiny, shrimplike copepods eat them….
Do the trees where you live change their clothes during the year? Do they wear light green buds in the springtime, dark green leaves in the summer, and beautiful reds, golds, and purples in the fall?…
Even air creates friction—it rubs against moving things and slows them down. You can make a \”helicopter” that uses the friction of air to slow its fall—and to spin, too. Place the paper with…
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