It is not, 'imminent,' since the ozone layer in the atmosphere is slowly repairing itself. However, that being said, there is lots the human race can do to stop global warming. It may have more effect in 30 years time, but, if humans do enough, we can stop worrying. Renewable energy is a good idea to prevent global warming. Since most of it is generated from Co2 emissions from generating power. Electric cars are also good, because if we can make renewable energy (such as wind or solar power, or hydroelectric power for that matter) to power them, they will not produce emissions either.
There are two types of cell division: mitosis and meiosis. Most of the time when people refer to “cell division,” they mean mitosis, the process of making new body cells. Meiosis is the type of cell division that creates egg and sperm cells.
Human reproduces through sexual reproduction. Sexual reproduction is the process of production of new progeny by the formation of male and female gametes (sperms and egg respectively) and fusion of gametes. During gamete formation, crossing over adds new gene combinations to the gametes. The genetic variations make the progeny of sexual reproduction different from each other and from the parents.
