Answer:
cosmic microwave background
The cosmic microwave background (CMB) is thought to be leftover radiation from the Big Bang, or the time when the universe began. As the theory goes, when the universe was born it underwent a rapid inflation and expansion.
Explanation:
Both a and b. Protists can be heterotrophic (organisms that get their nutrition from complex substances) or autotrophic (organisms that make their own nutritional substances).
Embedded into the Lipid bilayer
The Carbon<span>/Oxygen </span>Cycle<span> involves three </span>major processes<span> and one minor </span>process<span>: photosynthesis, respiration, combustion and decomposition.</span>