Which two worldwide agreements were written to address climate change? a) Endangered Species Act and the Kyoto Treaty
b) Kyoto Treaty and the Paris Climate Accord
c) Lacey Act and the Paris Climate Accord
d) Montreal Protocol and the Lacey Act

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.

During the process of two rails or sides break apart and attract new nucleotide bases to form a new and complete strand.

Is there any solid scientific evidence that humans have been cloned?