Organisms of the different species can cohabit in the same habitat but contribute differently to the ecosystem they are found. This individual organism's contribution is referred to as NICHE. Ecological niche is the role of an organism in the ecosystem it's found. An organism's niche can include; how it contributes to the environment, what it does to survive, what it feeds on, how it interacts with other species etc.
In the case of these three Warbler species occupying the same habitat (tree), each Warbler species feeds on different parts of the tree (top, middle and bottom) which contains different organisms. This means that the three Warbler species are predators to three different organisms.
Since they feed on different organisms to survive, it can be said that they occupy different niche even if they share same habitat.
With the overuse of chemical fertilizers, many lawns now have it to where decomposers can't live. This interferes most directly with the lawn ecosystem to recycle important nutrients. The correct answer is choice number 2.
Answer: Today, almost all evolutionary relationships are inferred from molecular sequence data. This is because: DNA is the inherited material. We can now easily, quickly, inexpensively and reliably sequence genetic material.
