B. Cladistics, because the other two choices don't make any sense.
Swamp ... Hope this helps :)
Mushrooms because they dont use photosynthesis
Answer: red flowers are rich in nectar
Explanation:
When two indistinguishable crickets are together, for example, and you only know they are different because of their mating song. A behavioral isolational cricket would conduct only that with another cricket with similar mateship behavior.
BTW you should probably put in the options.
