Any living or once living organism in the environment

answer: dinosaur

explanation

their extinction was caused by massive asteroid that fell on earth

. ph changes the ability of them he enzyme to dissolve in water.

very

there is not 1 highest source of protein, but there are many; meats, fish, poultry, seafood, cheese, eggs, yogurt and milk. the only non complete animal food that is beneficial is gelatin.

sorry if this did not , have a great day!