1) balancing the importance of other other topics, what percentage of the US history classes do you think should be devoted to the indigenous people from before Columbus discovery? 2) Explain your understanding of why the native Americans lost their land to European settlers.

can someone please help me on these 2 questions? I need help

What does all of the organ system in a human form

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.

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