1. Apr 23, 2009 #1

   johncena

   

   who was first??
   
   who was first on earth?man or women???

    

   johncena, Apr 23, 2009
2. 
   Phys.org - latest science and technology news stories on Phys.org

   • • Study finds that gravity, 'mechanical loading' are key to cartilage development
   • • Hormonal tug-of-war helps plant roots navigate their journey through the soil
   • • No microbes? No problem for caterpillars
3. Apr 23, 2009 #2

   Mapes

   

   Science Advisor

   Homework Helper

   Gold Member

   Re: who was first??
   
   Please define "first." There is a continuity between humans and our non-human ancestors, so the division line is arbitrary.

    

   Mapes, Apr 23, 2009
4. Apr 23, 2009 #3

   hypatia

   

   Re: who was first??
   
   There is no way to know.

    

   hypatia, Apr 23, 2009
5. Apr 23, 2009 #4

   Moridin

   

   Re: who was first??
   
   Neither was first. Asexual reproduction existed far earlier than sexual reproduction and/or gender.

    

   Moridin, Apr 23, 2009

• Log in with Facebook
• Log in with Twitter

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in