What process would be necessary for the movement of calcium ions from areas with low concentrations to areas with high concentrations

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

Plz genetic engineering can be applied to many fields including medicine and agriculture. which of the following is a medical application of genetic engineering? a. giving crop plants recombinant dna so that they would be resistant to herbicides. b. examining a persons pedigree to determine whether they can carry a gene for a genetic disease. c. analyzing a persons dna to see how closely they are related to another person. d. certain genes into bacteria so that they will produce a needed medicine.

(99 points) be serious! how do farts work? how do you fart without it stinking? serious answers only