Explanation:
It happens when the moon is in the earth's shadow
And sun moon and earth is completely aligned
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
D. Salamander is not a reptile.
It is an amphibian. It looks like a lizard but is not one. It lives on both land and water.
It's Kingdom Animalia; Phylum Chordata; Class Amphibia; Order Urodela with sub-orders Cryptobranchoidea, Salamandroidea, and Sirenoidea
Cellular differentiation is the process where a cell changes from one cell type to another. Usually, the cell changes to a more specialized type. Differentiation occurs numerous times during the development of a multicellular organism as it changes from a simple zygote to a complex system of tissues and cell types