Salty meal --> digestive process --> hypertonic blood plasma --> hypertonic intestinal fluid --> pulls H2O from cells --> increase in blood plasma volume --> increase in blood pressure and increase in thirst --> increase of urine in the kidneys.
Dinosaurs lived between 230 and 65 million years ago, in a time known as the Mesozoic Era. This was many millions of years before the first modern humans, Homo sapiens, appeared. Scientists divide the Mesozoic Era into three periods: the Triassic, Jurassic and Cretaceous. During this time, the land gradually split up from one huge continent into smaller ones. The associated changes in the climate and vegetation affected how dinosaurs evolved.
Dinosaurs became extinct about 65 million years ago at the end of the cretaceous period (see what cretaceous dinosaurs were around at this time). About 70% of all animal life on earth died out. Scientists call it a mass extinction â it wasnât the first mass extinction in earthâs history and it probably wonât be the last! Having existed for 165 million years, why did dinosaurs die out? There are many different theories about why this happened.