How do B cells know when to make antibodies? A.) They are alerted by Helper T cells.

B.) They are always making antibodies just in case that pathogen is present.

C.) They are alerted by Macrophages.

D.) B cells will simply find the pathogen in the body and immediately begin making
antibodies to fight the pathogen.

a. as the temperature increases, the kinetic energy of the gas molecules increases & the molecules move faster & further away from each other.

b. if you decrease the temperature of a fixed amount of gas at constant pressure, the combined gas law reduces to charles's law. in this case, volume will also decrease.

the electromagnetic energy from the sun arrives in the form of visible and invisible light.

the main thing i would use is bricks because if there is a hurricane, there is a great possibility for the house to still stand. and i would also use plexiglass windows instead of regular windows because plexiglass isn't prone to breaking.