Stress is a force applied over an area. One type of stress that we are all used to is a uniform stress, called pressure. A uniform stress is where the forces act equally from all directions. In the Earth the pressure due to the weight of overlying rocks is a uniform stress and is referred to as confining stress.hen a rock is subjected to increasing stress it changes its shape, size or volume. Such a change in shape, size or volume is referred to as strain. When stress is applied to rock, the rock passes through 3 successive stages of deformation.
The pygmy hippopotamus (Choeropsis liberiensis or Hexaprotodon liberiensis) is a small hippopotamid native to the forests and swamps of West Africa, primarily in Liberia and small populations in Sierra Leone, Guinea and Ivory Coast.The pygmy hippo is reclusive and nocturnal.etween 1970 and 1991 the population of pygmy hippos born in captivity more than doubled. The survival of the species in zoos is more certain than the survival of the species in the wild. In captivity, the pygmy hippo lives from 42 to 55 years, longer than in the wild.
The hippopotamus, or hippo, ancient Greek for river horse, is a large mammal in Africa that usually eats plants. It is one of only two species in the family Hippopotamidae that are still alive. The other is the pygmy hippopotamus. The hippopotamus is the second largest land animal in size, and the third largest land animal in weight. The elephant is the heaviest, and the white rhinoceros is the second heaviest, but a bit smaller than the hippo. The hippo is also the heaviest artiodactyl. The h