The main reason for the difference in the mass extinction occurring today and previously is the pace of the current extinction. The extinction is taking place globally and involves hundreds of species at the same time. In less than 50 years, we have lost numerous species. In contrast to this, previously during the mass extinction, only a few species were lost, and other managed to survive. But, not the status is opposite due to the magnitude of the extinction.
The correct answer is C. it takes up space and has mass.
This is something which is true of all matter. A is incorrect because it can be made of other things as well. B is incorrect because it can be found elsewhere as well. D is incorrect because it can take any form it wants - not just liquid or gas.
Answer: 50% of a mineral reserve.
Explanation:
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