Speciation occurs when populations of a species become so different over time that they can no longer interbreed. Which of the
following best describes the relationship between speciation and biodiversity?
A.
An increase in biodiversity generally results in a decrease in speciation rate.
B. Ecosystems with low biodiversity always have a low rate of speciation.
C.
Speciation results in an increase in overall biodiversity.
D.
Speciation can only occur in ecosystems with low biodiversity
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C

Explanation:

speciation results iIn more species, therefore a greater biodiversity

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.    

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.