Hi lovely,
The answer you're looking for would be B).
The core of a star must react a temperature of 10,000,000 degree Celsius for hydrogen fusion to begin
Explanation:
A star formed from a rotating cloud which is made up with completely with helium and hydrogen. The gravitational force pulls the cloud behind to collapse inward and due to this it shrinks and later it spins more and more quickly with the outer parts.
When the core and inner part become a rough spherical clump then it becomes disk. The star life cycles follow the patterns which is based on mostly on their initial mass.
Answer:
Tidal energy is renewable energy powered by the natural rise and fall of ocean tides and currents
Explanation:
A temperate forest is likely
to have numerous flowers from flowering
plants. Flowers are an evolutionary trend in flowering plants to attracts animals to
facilitate pollination. The flowers contain nectar that attracted birds, bees and other
nectar-sucking animals. The nectar is produced by nectaries
in hollow
tube in the flowers. Therefore for birds to access
the nectar they require to have long slender beaks as an adaptaition.
