Robert Hooke , Matthias Schneider , Theodore Schwinn, Rudolf Virchow, Leeuwenhoek
Areas near continents where freshwater rivers enter the ocean. The ocean IS salt water.
Probably it is b because they are together and in the crossing over they can't be together. But I'm not sure. I'm sorry!
Answer: the tibia, fibula, femur, metatarsals, and phalanges also the humerus, radius, ulna, metacarpals, and phalanges
i hope this helps