PLS HELP A meteorologist observes a tornado forming near the Gulf of Mexico. Explain how this could happen. Include in your answer the physical factors that interact to lead to this phenomenon.

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.

The terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?