Scientists can make an inference about the temperature of a star based on the color of the emitted light. Several stars and their colors are shown below:
Bellatrix (blue)
Rigel (blue-white)
Procyon (white)
The Sun (yellow)
Alpha Centauri B (orange)
Betelgeuse (red)

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.

Why was mendel's work not accepted at the time? o a. his results were false. o b. he did not repeat his experiments. o c. he did not have any data. o d. his results were surprising,

Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.