C. since sexual reproduction takes a lot longer and it involves 2 offsprings. it requires more energy
Answer:
Sexual competition often occurs within complex social environments where male displays can be received by potential mates, rivals, or both at once. In brown-headed cowbirds’ breeding flocks, for example, multiple males sometimes vie directly for a single female’s attention; at other times males have opportunities to sing to females without interference. It was tested whether cowbirds vary the intensity of their signalling across contexts like these. The songs were recorded from males courting females both with and without a male competitor in sight. The recordings were now played to solitary, naïve females in sound attenuation chambers, and also to a naïve aviary-housed flock. The songs males had produced when they could see their competitors were more attractive, eliciting more copulatory postures from naïve females and more approaches from birds in the flock.
Explanation:
<span>flowing rivers, can be found in areas away from karst topography as well, so it is the best answer</span>
It weakens the immune system making it unable to defend itself against viruses and it also attacks the immune system..
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Is very necessary in the development of multiceular organisms. This is so because <span>the complexity of animals and plants depends on a remarkable feature of the genetic control system. Cells have a memory: the genes a cell expresses and the way it behaves depend on the cell's past as well as its present environment. Hope this info has given you the answer you need </span>
