Ihave a question ill add a picture dont worry

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.

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the

What element is able to combine with itself and hydrogen to form large molecules ?