Answer:
Prezygotic barriers:
1. Habitat isolation
2. Behavioral isolation
Explanation:
Pre-zygotic barriers are the barriers which do not allow the formation of the zygote in the organisms.
The two mechanisms of the pre-zygotic barriers are the:
1. Habitat isolation: the Flycatchers do not share the same habitat which is also mentioned in the question that they live on different islands.
2. The behavioural isolation: the Flycatchers could have evolved the different mating rituals as a result of which the could not interbreed.
Thus, Habitat isolation and Behavioral isolation are correct.
The answer is either a or c
The correct answers are <span>by adding greenhouse gases to the atmosphere by using natural resources, by polluting the land, water, and air, by creating landfills and by introducing invasive species to the environment.
Adding greenhouse gases to the atmosphere contributes to the rise of the global temperature and climate change which leads to the rise in sea level, and extreme weather conditions.
By polluting the land water and air and creating landfills humans are destroying not only the habitat of many plants, animals, and other organisms but also for themselves.
Overexploitation of the natural resources also leads to the destruction of habitat and collapse of ecosystems.
The introduction of invasive species often leads to disruption of the food chain of an ecosystem since the invasive species might be more efficient in this habitat and suppress the native organisms.
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I want to say arthropods and flatworms. I am pretty sure that the others you cannot see the segmentation