When tiny ice crystals in clouds stick together to form snowflakes, the result is snow. If enough crystals form a clump, they'll become heavy enough to fall to the ground. When temperatures are cold and moisture in the form of tiny ice crystals exists in the atmosphere, snow forms.
Small leaves protect desert plants from animals that eat plants.
Answer: "symbiosis" ; or, a "symbiotic relationship" .
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Answer: Chemical bonds
Explanation: an atom has a positively charged nucleus surrounded by a cloud of electrons.
