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What is green building?

Green building is usually referred to as those structures and buildings  that are constructed in such a way that it helps in eliminating the negative influences such as pollution, emission of harmful gases in the environment, and in return, positively influences the ecosystem, environment and the climate in any particular place.

Explanation:

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It is the practice of maximizing the efficiency with which buildings and their sites use resources (energy, water, and materials).

It is the practice of minimizing building impacts on human health and the environment.

Green building is also known as sustainable or high-performance building.  

Explanation:

These was after the short writing and it asked Which of the following did you include in your answer?  Check all that apply so these would be the exact answers.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.