ADNOC has technology that uses pressurized water to fracture shale in order to access the petrochemicals trapped within the shale. How much pressure is required to fracture shale?

The shift of a vehicle's weight around its center of gravity is known as

How does natural selection change thephenotypes within a population over time?

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.