PLS HELP ASAP DUE TONIGHT I NEED HELP ON ALL THREE QUESTIONS

Which type of bond forms between water moleculesstrong bondhydrogen bondcovalent bondpolar bond

Which is an important function of normal flora? a. aid with bone marrow production. b. crowd out pathogenic bacteria. c. destroy digestive track pathogens. d. manufacture iron in the bloodstream.

Asap many people try to eliminate fat from their diets which is one reason it is necessary for humans to eat fat a) fat is the only way to get energy b) every cell in the body must contain fat c)fat stores less energy than polysaccharides d) saturated fats make blood vessels healthier