Planktonic algae are primary producers so your answer is A. :)
It is an example of Cyclical unemployment. hope i helped!
Answer:
I can't understand the language text in English and with your language name I reply that
Answer: Diversity, referring to the state of having many different organisms cohabitate within an area is a desirable outcome for many ecosystems. The presence of a wide spectrum of different organisms allows for more life to be able to thrive in an ecosystem. For example, an ecosystem with a wide array of shrubs, grasslands and forested areas is able to accommodate more life forms than an ecosystem of just forest. This increased capacity to support life directly improves the capacity of the biosphere to support life as well, diversity leading to growth.
By mating with desired traits is your answer
