In triangles ABC and DEF, ∠B = ∠E, ∠F = ∠C and AB = 3 DE. Then, the two triangles are
(A) congruent but not similar (B) similar but not congruent
(C) neither congruent nor similar (D) congruent as well as similar
The species diversity of plants (22 per cent) is much less than that of animals (72 per cent). What could be the explanations to how animals achieved greater diversification?
Among the ecosystem services are control of floods and soil erosion.How is this achieved by the biotic components of the ecosystem?
What is the significance of the slope of regression in a species – area relationship?
Give three hypotheses for explaining why tropics show greatest levels of species richness.
How do ecologists estimate the total number of species present in the world?
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