Scientists estimate that there are 8.7 billion animal species on the planet. There are about 400,000 plant species. New plants and animals are being discovered every day. Scientists who study these species have lots of choices to make and lots to learn. Now the choice is yours. Would you rather be covered in feathers or scales? Would you want to be an oak tree or a giant water lily? Would you choose to talk to animals or understand plants? It's your turn to pick this or that
ThriftBooks sells millions of used books at the lowest
everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We
deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15.
ThriftBooks.com. Read more. Spend less.