Acoin is tossed into the air 500 times. approximately how many heads would you expect?

Explain how ancient whale fossils found in eqypt are believed to support the theory of evolution.

Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.

Nh3 +02-no + h20 is unbalanced what is the balanced equation