Answer:
Most planets have an atmosphere but none has a hydrosphere like Earth does.
Explanation:
C. nerve cells.............................
Answer:
Physical science is basically the study of non living things
So the answer is :
Solar system, Light ,Air ,land ,Sound and Water
Sundials work based on the rotation of earth
Answer:
about 50
Explanation:
U.S.A, Britain, China , Soviet Union and France and about 50 other states came together to draw a charter on 24 October 1945, at San Francisco in U.S.A.