Five hundred million years ago, basaltic lava flowed in an area now known as monticello, the historic home of thomas jefferson. some of this rock has since re-crystallized under intense heat and pressure and then has been eroded by wind and rain. the order of the rock cycle in this case is best described as
a)
metamorphic, igneous, sedimentary.
b)
igneous, sedimentary, metamorphic.
c)
igneous, metamorphic, sedimentary.
d)
metamorphic, sedimentary, igneous.?

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?