A car is travelling at a constant speed of 80 km/h. How many kilometers will the car cover if it keeps this speed for the next 3 hours and 30 minutes?

Match the types of competition to their descriptions.

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

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.