Answer:
Two of the same molecules can not connect. I hope this is right...
The wing of a bat is homologous to the flipper of a whale. Homologous structures are structures that have a similar ancestries and common traits but maybe not have the same function in an organism. For example the arm of a human, the wing of a bird or a bat, the leg of a dog and the flipper of a dolphin or whale are homologous structures.
Answer:
chemistry is basically the study of matter and their properties. it also it also explains how and why some substances combine or separate to form different substances.
