When the sun reaches the end of released into space, forming a life cycle, the expanded part will be Planetary nebula.
<u>Explanation:</u>
Planetary nebula formed after when the external layer is shredded due to running out of fuel so that it can burn. This external layer of gas expand into the space, the shape of nebula can often be ring shaped or even a bubble. At the centre of this nebula it has the shinning left over middle part of the star. This star can also be seen. The temperature of the nebula is 100000C. The planetary nebula last for about 10000 years between its formation and the recombination.
Answer:
Antibodies are produced by specialized white blood cells called B lymphocytes
Explanation:
The 3 types of scientific investigation are correlative,comparative, and descriptive
The ozone layer helps prevent harmful UV rays from entering the atmosphere.
Answer:
Innate immunity
Explanation:
Innate immunity is also referred to as inherited or natural immunity. It is the type of immunity that one is born with. It is passed on from mother to offspring. This form of immunity is non-specific as it offers protection from many types of antigens.
