yes
A recent study by University of Parma's Nicoletta Pellegrini, PhD found that boiling carrots actually increased the levels of carotenoids, compared to raw carrots. Carotenoids are what give carrots their orange color.
The proteins and nutrients in an egg cannot be "harmed". Cooking an egg so that the albumin (the egg white) turns white is caused by the proteins denaturing and changing shape due to the heat. There's absolutely no evidence that this denatured protein has any different effect on the human body than the raw egg white. Boiling an egg will not appreciably affect its nutritional content. More of concern should be that the egg is cooked thoroughly to destroy foodborne pathogens such as E. Coli and Salmonella. Contracting food poisoning from uncooked foods is a far greater danger than any postulated "loss of nutrients" from boiling an egg too long!
boiling
No. It may destroy other qualities (like texture) but with only small nutritional loss.
destroy if by which you mean denatures then yes boiling will do that, because the enzyme's form / shape has been change and that changes its function
yes, as it is fatty due to the high content of oil used to deep fry! fool.
No
Yes. It can make some inedible food edible and it can destroy the nutrients in other foods.
It destroys some but not all; you can minimise the quantity that are destroyed by steaming or blanching the veg, and eating them on the crunchy side.
According to the Law of Conservation of Matter/Energy, a chemical reaction (like boiling water) does not destroy anything.
Heavy rains/flooding, or crops/plants that destroy the nutrients in the soil (like the cotton plant).
Yes. Heat can destroy nutrients in all vegetables. The only vegetable, also known as a fruit, that does not loose nutrients is tomatoes. The longer the vegetables are cooked, the more nutrients are lost. The nutrients are lost through the water its steamed in, and the steam itself. Raw is best, but if you must cook them, cook until slightly tender, where some nutrients are still there.