A negative charge that exists because of a covalent bond with hydrogen.
Answer:
You have external defense systems, which include your skin, tears, mucus, saliva, stomach acid, cilia (small hairs) and helpful bacteria. The skin, nails and hair form the integumentary system, which stops dirt and pathogens from entering the body.
Answer:
What is a metabolic pathway?
Metabolic pathways could be simply defined as ways whereby reaction occurs chemically within a cell which are carried about by enzymes called metabolites, those enzymes helps in hasten up the reaction.
Explanation:
Studies of populations that reveal correlations between dietary habits and disease incidence are epidemiological studies.
