Which is an internal environmental factor that affects heredity? light
temperature
nutrition
hormones

Hormones

Explanation:

I may be wrong but I believe this is the answer as hormones occur within the herd, whereas the others occur outside

c-reactive protein (crp) is an acute phase protein belonging to pentraxin family of proteins, whose levels increases 1000-fold or more in concentration in blood during the occurrence of an injury, inflammation or tissue death.