Is the answer three
Because they help the body absorb vitamins a, d, e, and k.
Your answer is true
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The answer is option B "declining number and variety of the species in an area." Biodiversity is a variety of life for example a ecosystem has many species which makes it a biodiversity. Now a loss of a biodiversity would be loosing a huge amount of species in that area or ecosystem which would mean the answer is option B.
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A unicellular or single celled organism is the term for organisms composed of only one cell.
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