Which of the should be given to students before they begin a labratory experiment

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom

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.

Ture or false evidence for evolution includes millions of fossils