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Of course. Google it.
Different studies have repeatedly shown differences in brain structures, brain chemistry and nerve responses to various stimuli between heterosexuals and homosexuals.
One article:
http://www.time.com/time/health/article/0,8599,1815538,00.html
If you are wondering whether or not sexuality is a choice, ask yourself "Have I ever had to choose/felt I needed to choose?" Of course not, you just feel. Animals can be gay/bisexual, can animals make conscious/subconscious decisions? Gay and straight people are physically different. Everything has an opposite and a median; up and down, light and dark, tall and short, the broad and diverse spectrum of intelligence, life and death, love and indifference, gay and straight. The universe is full of examples of directly opposing phenomena, everything has an opposite.
Can you see my logic?
What else can I help you with?
Are there any physical differences between Jews and other people?
I highly doubt there are any physical differences between Jews and other people. Every is equal so there shouldn't be. However, that is my assumption.
What are the Physical differences between biochemistry and General chemistry?
there arent any
Is there any physical differences of a virgin male or not?
There are no physical differences between a virgin male and a non-virgin male. Virginity is a social and cultural concept, not a physical one, and does not have any impact on a person's physical appearance.
Is there any differences between entreprenuership and enterprenuership?
no difference
Any differences between individuals of the same species?
Of course - look at the many differences existing between the human race.
What are differences between the computer and other electronics machine or devices?
a computer is a programmable machine while eletronic component is any physical entity in aneletronic system
Was Zimbabwe involved in any wars?
More than likely tribes have had their differences, and have had physical conflicts.
Are there any bone strength differences between men and women?
no
Are there any differences between the 1981 and 1982 deloreans?
Yes.
Were there any differences and similarities between galen and Hippocrates?
yeah
Is there any differences between sheep and llamas?
yes. its a llama not a sheep
Are there any differences between a male and female kinkajou?
What is the difference between a female and male Kinkajou
