What scientific field was created when recombinant dna was first made in the 1970s?

Which statement best describes the underground railroad? a.) it is a train that took slaves from the south to the north. b.) it is a business that harriet tubman founded to slaves become free. c.) it is a secret route that slaves took to escape from southern slave states to the north. d.) it is a road that slave owners disliked using for travel.

Which of the following was a similarity between classical mesoamerican and south american civilizations ?

Why would the saudi’s oil industry need a large investment in human capital