Answer:
Actually, in physical cosmology, Big Bang nucleosynthesis (or primordial nucleosynthesis) refers to the production of nuclei other than H-1, the normal, light hydrogen, during the early phases of the universe, shortly after the Big Bang. About first millisecond, the universe had cooled to a few trillion kelvins (1012 K) and quarks finally had the opportunity to bind together into free protons and neutrons. Free neutrons are unstable with a half-life of about ten minutes (614.8 s) and formed in much smaller numbers. The abundance ratio was about seven protons for every neutron. Before one neutron half-life passed nearly every neutron had paired up with a proton, and nearly every one of these pairs had paired up to form helium. By this time the universe had cooled to a few billion kelvins (109 K) and the rate of nucleosynthesis had slowed down significantly.
Explanation:
The answer is B: 'the smoke that results is toxic'. An example is the burning of domestic garbage, which remains a common practise, particularly in developing countries. This practice can release g<span>reenhouse gases like carbon dioxide and also tiny particles and toxic chemicals that can harm human lungs.</span>
The sentence that is true is A galaxies are holder together by gravity it is not D because galaxies are real its not C because they are not being pulled apart and its not B because galaxies are held together.
The Main Organs include: Salivary, glands,Zero esophagus, Sstomach, Small intestine,Large Intestine and Rectum
About 0.67 km per minute 20km / 30 min
