Answer:
Enrichment helps satisfy both the physical and psychological needs of animals and allows them to make choices. Thus, animal enrichment creates a win-win-win situation for the animals, visitors and keepers! In the wild, animals must find food, defend territories, escape predators and build homes.
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Answer:
Ionizing radiation comes from these main sources:
Nuclear reactions in the Earth's sun and stars in space.
Radioactive decay in the body's tissues and in the soil.
Radioactive decay of unstable elements in rocks, especially rocks that contain radium and release radon gas.
Other examples of ionizing radiation include alpha, beta, and gamma rays from radioactive decay.
