Bird Generally speaking a bird is any member of the class known as Aves that share certain common characteristics and traits. Birds are warm-blooded, bipedal animals whose anatomy is characterized by forelimbs modified through natural selection and evolution to become wings, whose exterior is covered by feathers, and that have, in most cases, hollow bones to assist in flight.
UltimateTrivia Ultimate Trivia is a dynamic new educational mobile application with numerous study questions from various subjects such as Chemistry, Geography, Biology, Physics & History.It is most suitable for learners preparing for their SAT, GCSE, IGCSE or any other similar examinations also learners who are undertaking any Geographical, Historical or Scientific course would find it of great value, also anyone interested in general knowledge would find it fun and informative to use it
Animals Collection This app is a part of the 4-book series on animals, life sciences, biology SAT prep, and biology advanced placement. Keys is an advanced, unique learning platform that simplifies complex subjects, aids memorization, and improves your scores on public exams