Answer:
Male and female gametes fuse together to form a diploid zygote during sexual reproduction.
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Answer:
High mass stars have to generate a lot of energy in order to balance the force of gravity. Therefore they are very hot and luminous. That explains their position high on the Main Sequence. On the other hand, low mass stars have to generate little energy in order to balance the force due to gravity.
A.
Because of the urban heat island effect, less heat will be absorbed and regional temperatures will be slightly higher.
