Biology is the study of life.
Answer:
Any abiotic factors. So rocks, water, air, sunlight and anything non-living are not part of a community.
Night blindness is caused by vitamin A
Answer:
Elements and compounds cannot be broken down into simpler substances by an ordinary process because of the following reasons.
1) Elements cannot be broken down by chemical or physical methods because elements is composed of atoms which are indivisible.
2) Compound cannot be broken down into simpler substances by ordinary process because elements present in the compound are combined with each other chemically.
Answer: You, Digestive system, Stomach, Epithelial Tissue, Parietal cells.
Explanation: