Answer: Pollution, climate change, habitat loss, or invasive species
Unlike the hippo's ancestor, whale ancestors moved to the sea and evolved into swimming creatures over a period of about 8 million years. Fossils of gigantic ancient whales called Basilosaurus were first mistaken for dinasaur fossils but were later recognised as mammals.
The ventral visual stream projects to the inferior temporal cortex and is involved in the perception of form. While the dorsal visual stream projects to the parietal association cortex and is involved in the analysis of spatial location. the ventral visual stream is a pathway that stretches from the primary visual cortex in the occipital lobe forward into the parietal lobe.
During the water cycle some of the water in the oceans and freshwater bodies, such as lakes and rivers, is warmed by the sun and evaporates. During the process of evaporation, impurities in the water are left behind. As a result, the water that goes into the atmosphere is cleaner than it was on Earth.
