Please capitalize where necessary: "so why did lavrentev credit you with it?" ahlfors said "he probably thought i must know it and was too lazy to look it up in the literature".
A: "So why did Lavrentev credit you with it?" Ahlfors said "He probably thought I must know it and was too lazy to look it up in the literature".

Please capitalize where necessary: welcome to chef oti's cooking class! today you'll get the chance to learn all the baking tips and tricks for putting together a so very famous, delicious dessert: a yum, yum carrot cake! follow all her priceless indications and carry out all the cooking tasks that she’ll give you, one by one. start with the basics and break an egg or two, then...
A: Welcome to chef Oti's cooking class! Today you'll get the chance to learn all the baking tips and tricks for putting together a so very famous, delicious dessert: a yum, yum carrot cake! Follow all her priceless indications and carry out all the cooking tasks that she’ll give you, one by one. Start with the basics and break an egg or two, then...

Please capitalize where necessary: these owls ornaments are made of white soft feather and come in a variety of sizes.
A: These owls ornaments are made of white soft feather and come in a variety of sizes.

Please capitalize where necessary: in a closed system subjected gases of ammonia, hydrogen, methane, and water for electric discharges.
A:
In a closed system subjected gases of ammonia, hydrogen, methane, and water for electric discharges.