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snow_lady [41]
4 years ago
9

Does anyone know what "D" is pointing to and what it's called?pic shown

Biology
2 answers:
pishuonlain [190]4 years ago
5 0
D is the negative you have a negative and a positive he is negative
fiasKO [112]4 years ago
3 0
I think it's a wire clip.
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Answer:

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Explanation:

Species diversity of an area depends on its species richness and species evenness. Species richness is the number of species present in that area. Species evenness measures how evenly these species are distributed.

Here, both plot 1 and plot 2 have same number of species. They both have four species of trees ( maple, birch, oak and pine) hence their species richness is same. However plot 1 has 85% maple trees and the rest three species make the remaining 15%. Plot 2 has more even distribution as 35% of trees are maple trees and birch and oak also have similar frequency with 25% and 35% respectively. Hence, plot 2 has more evenness.

Species diversity depends on both richness and evenness. Since plot 1 and 2 have same richness but plot 2 has more evenness, plot 2 has more species diversity than plot 1.

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