Answer:
Option A, A-light bends around the edges of the slit.
I think its A ( behave like a ripple)
Answer: There no chemical change, but there is a physical change.
Reason: When a substance dissolves in water, the substance retains its molecular identity and simply mixes throughout the water
D. The limb bones do not look as developed as
they do in the amphibian.
If you mean which of the two is denser, then you want the oceanic crust.
