A and B probably take the longest
~Hello there!
Your question: In humans the number of sperm cells required to produce a pair of identical twins is ______.
Your answer: In humans the number of sperm cells required to produce a pair of identical twins is 2. 2 sperm cells are required to fertilize 2 eggs.
Any queries ^?
Happy Studying!
Answer:
1. Some people smoke as 'self-medication' to ease feelings of stress. However, research has shown that smoking actually increases anxiety and tension. Nicotine creates an immediate sense of relaxation, so people smoke in the belief it reduces stress and anxiety.
2. Gateway drugs are substances that, when consumed, give way to harder, more dangerous drugs. These milder substances, such as nicotine or alcohol, are believed to open the door to drugs such as meth, heroin and cocaine, which can lead to addiction.
Women have 34% body fat on Average, while men have about 23%
