Why do the estimates of the number of different species of plants, animals, fungi and microorganisms vary so much? (Mark all that apply.)
1. Many organisms are extremely difficult to identify and tell apart from other species.
2. Many species, such as bacteria and many fungi, are tiny and easily overlooked.
3.Some areas of Earth, such as the deepest ocean, remain relatively unexplored.
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Why do the estimates of the number of different species of plants, animals, fungi and microorganisms...
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