A student dips a strip of metal into a liquid. Which is evidence that only a physical change has occurred? The metal gives off light. The metal changes color. The metal gives off heat. The metal bends more easily.

Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .

How does human environment effect the biosphere

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?