Ans.
Testes and ovaries are male and female reproductive organs, respectively. These organs are similiar as testes produce male gametes or sperms by the process of spermatogenesis and ovaries produce female gametes or ova by the process of oogenesis.
These gametes fuse together to form zygote that develops into a multicellular organism. Thus, the correct answer is 'option A). both produce sex cells.'
I'd say probably Biomass, not 100% sure but it's renewable, but it can create power and heat.
C. your core will be made of protons will be made of protons and neutrons while being surrounded by "shells" of electrons.
Cloudy day because of solar radiation