Which of the following fossils is not found within the rock layers of the grand canyon?
a. trilobites
b. dinosaurs
c. stromatolites
d. armored fishes

Which experiment would most likely contain experimental bias

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.

What in scientific term why the salty popcorn causes this thirst