Answer:
The Role of Enzymes in the Digestive System. Chemical digestion could not take place without the help of digestive enzymes. An enzyme is a protein that speeds up chemical reactions in the body. Digestive enzymes speed up chemical reactions that break down large food molecules into small molecules.
The number of covalent bond an element can form depends on the number of electrons it has in its outermost shell (valence electrons). Carbon has four valence electrons, therefore, it can form maximum of four covalent bonds in an organic compound.
Hihi!
The answers are that there are bones in mammals and inside of echinoderms there are calcium rich plates! If you have any further questions please feel free to message me!
I hope I helped!
-Jailbaitasmr
Through the burning of fossil fuels and an increase in nitrogen-producing industrial and agricultural activities, according to a new study.
