Planets in our solar system do not revolve around the sun in perfect circles. Their orbits are more like ovals that scientists describe as elliptical. It is one of Kepler's laws. The sun is the focus of all the planets. The correct answer is D.
I belive what your looking for is oxygen
Since the diameter of helium atom is approximately 
, therefore the diameter of helium atom in nano meter,
Answer:
A -TRUE
Explanation:
The mass, size, and shape of the object are not a factor in describing the motion of the object. So all objects, regardless of size or shape or weight, free fall with the same acceleration.
Mitochondria is the cell organelle the provides energy to function it also helps in respiration .It is called also as the power house of the cell
