Answer:
Gonads
Explanation:
The gonads, the primary reproductive organs, are the testes in the male and the ovaries in the female. These organs are responsible for producing the sperm and ova, but they also secrete hormones and are considered to be endocrine glands.
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Length will be 0.491 nm
We have given wavelength of the photon
Plank's constant
We know that energy of the photon is given by
We know that energy of photon is also given by
I think the number 2, not sure
D, Im not very sure about this but I would say D
I tried