True. Nuclear fusion of hydrogen to form helium occurs naturallyin the sun and other stars. It takes place only at extremely high temperatures.
different parts of the sum rotate at different rates
Answer:
Nitrogen fixation is the conversion of gaseous nitrogen into an organism friendly form (ammonia) .
Explanation:
Nitrogen fixation -
It is very important and necessary process by which the nitrogen gas present in the atmosphere gets converted to nitrogen derivatives like ammonia in the soil , is referred to as the process of nitrogen fixation.
This occurs due to the reason , that the derivatives of nitrogen are of much more importance than the molecular nitrogen.
Biologically the process is done by the rhizobium bacteria .
Hence ,
From the question,
The correct option is a.
Answer:
neutron, proton, and electrons
Explanation:
The protons and the neutrons make up the center of an atom which is called the nucleus
Answer:
E All of the above.
Explanation:
A physical change could chang one or two of those, like color or temp, but chemical would require a gas/and or perticipate to form
