Dinosaurs represented a major turn in the evolutionary development of organisms on Earth. The first dinosaurs were presu..
The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..
Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..
Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..
A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..
A typical eukaryotic cell is comprised of cytoplasm with different organelles, such as nucleus, endoplasmic reticulum, G..
