Please capitalize where necessary: academic subjects seemed to hold little attraction for heaviside however and at age 16 he left school.
A: Academic subjects seemed to hold little attraction for Heaviside however and at age 16 he left school.
Q: crump's control over memphis was tenuous as long as his political enemies controlled the state government in nashville.

A: Crump's control over Memphis was tenuous as long as his political enemies controlled the state government in Nashville.
Q: the shape and size of the eggs vary.
A: The shape and size of the eggs vary.
Problem: signs and symptoms of phenotypic reproductive development disorders may include external reproductive organs that do not match the internal chromosomes.
Can you repeat this sentence, but capitalize it?
Answer: Signs and symptoms of phenotypic reproductive development disorders may include external reproductive organs that do not match the internal chromosomes.
Text: when you're ready to mix it up, use the fish mix to make new fish, you'll see some crazy combos. and don't forget to sell some fish so you'll have plenty of cash to keep your fish in style.

Correct capitalization: When you're ready to mix it up, use the Fish Mix to make new fish, you'll see some crazy combos. And don't forget to sell some fish so you'll have plenty of cash to keep your fish in style.
Problem: thanks to the sharpened and hardened edge, problem-free work is possible.
Can you repeat this sentence, but capitalize it?
Answer:
Thanks to the sharpened and hardened edge, problem-free work is possible.