What is a broken foot? A broken foot is a condition characterized by a fracture of one of the 26 bones in your foot. The fracture may occur in your toes, ankle, heel or midfoot. A broken foot may result from a variety of injuries, including falls, accidents, or dropping an object on your foot. Osteoporosis, which is a thinning and weakening of the bones, is an additional cause of broken feet.
Period when the first true fish appeared - Crossword Clue. Below are possible answers for the crossword clue Period when the first true fish appeared. SILURIAN. from  425 million to 405 million years ago; first air-breathing animals.
Depends on what your definition of animals is Angela, The first invertebrates-part of the animal kingdom-appeared around 430 million years ago. However, these animals don't look much like anything we have now.The first modern looking animals appeared around 360 million years ago-this would be the first primitive fish.rocaryotic cell structure appeared about 3.3 billion years ago. Photosynthetic bacteria appeared about 3.0 billion years ago, causing the oxidation of the other gas species and then the slow rise of the atmospheric concentration of free oxygen over the next two billion years.