The answer is A. a light wave
C and D both need water as a medium and sound needs air to vibrate in order to travel. light, on the other hand, does not need a medium
They transport oxygen to all the cells of the body
Bauxite does not have a specific composition. it's a mixture of hydrous aluminum oxides, aluminum hydroxides, clay materials, and insoluble materials such as, quartz, hematite, magnetite, siderite, and goethite
Answer:
<em>Only one process involves sperm and eggs</em>
I would say C Duplication since both of the DNA sequences are identical.