Why birds make nests? Explain.

Many bird species lay their eggs in shelters called nests. They provide a safe, warm place for the parent birds to care for their eggs and chicks, hidden from predators and protected from bad weather. Different birds make their nests using different materials. ... Many nests are made of any materials the bird can find.

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

hi, natural selection of the peppered moth during the industrial revolution in 19th-century england is an example of an outlier in the study of evolution. during this time, pollution from factories filled the forests, coating trees in a layer of soot—turning white trees black

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