The common ancestor of all these chordate groups except the probably had paired appendages. chondrichthyes aves echinodermata mammalia agnatha

What protects the lining of the stomach from acidic gastric juices?

Animals such as pronghorn antelope, bison ans badgers dot to the landscape. where are these animals located?

How does upwelling affect coastal fisheries? upwelling damages nutrient supplies at coastal fisheries as the warm, nutrient-rich surface water is replaced by nutrient-poor, cold water. upwelling damages nutrient supplies at coastal fisheries as the cold, nutrient-rich surface water is replaced by nutrient-poor, warm water. upwelling improves the nutrient supply at coastal fisheries as the warm, nutrient-rich surface water replaces the nutrient-poor, cold water. upwelling improves the nutrient supply at coastal fisheries as cold, nutrient-rich water replaces the warm, nutrient-poor surface water.