Because you need to find half of 500.
The answer is 250.
Answer:
The inputs can be material, such as the silicon used in the computer chips in a phone, or energy, which is used, for example, to manufacture and operate a phone. Outputs can be usable products or wastes, which must be disposed or recycled. A life cycle analysis of a cell phone also includes an analysis of its individual parts.
Explanation:
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-BB
Sunlight = Food for plants and vegetables that we eat to get energy and to stay alive. To produce flowers, and other plants to give pollen to animals for food and water.
Ex. Humming birds, bees, butterfly's and many more.
The ribosomes make the proteins in a cell.