BIOL 225 Chapter Notes - Chapter 40: Macrophage, Chondroitin Sulfate, Homeothermy
Document Summary
Animals are incredibly diverse, both in their morphology and physiology and in the niches they occupy. In spite of this diversity, animals share many features and often face similar challenges. Natural selection has driven the evolution of animals that are well-suited to their environment. Evolution is constrained by chem and phys. Example: fish are shaped the way they are because it creates less drag thanks to the physics of water. Same thing with birds and animals that fly. Not everything works at different sizes (analogy with huge ants, the bigger they are they less weight they can lift) Some animals are called regulators which means they keep homeostasis in their body (thermoregulation) when it comes to beavers that keep the same body temperature no matter the temperature of the water. Unlike the beavers, fish keep the same temperature of the water.
