Answer:
According to the evidence, the Earth was formed about 4.6 billion years ago; Although there is no clear theory about how this happened, everything indicates that the Sun, Earth and other bodies in the Solar System were formed from the gravitational accumulation of a nebula. This was caused by the explosion of a nearby supernova, allowing the material to clump together.
Why was the Earth made up of layers?
There are two hypotheses in which the theory of accretion is based (Accretion: in astronomy it is the addition of matter to a body), and they indicate how the materials would have been grouped.
Even though the earth was created 6,000 to 10,000 years ago, this is according to research and scientists. :)
Answer:The answer is diffusion.
Explanation: Unicellular organisms excrete waste by diffusion.
Unicellular organisms are organisms that have only one cell. They are called single cell organisms because all their life processes such as reproduction, feeding, digestion, and excretion, occur in only one cell. An example of unicellular organism is paramecium.
Diffusion is the inactive movement of molecules from the region of higher concentration to the region of lower concentration.
Answer:
The chemical reaction is C6H12O6 + O2 -> CO2 + H2O + energy.
Explanation:
Answer:
4900 J
Explanation:
Potential energy is the product of the mass, gravitational constant and the height of the object.
U=mgh=10 kg×9.8 m s^(-2)×50 m=4900 J
So, the potential energy of the object is 4900 J.
