What are two ways in which white blood cells fight pathgons that have entered the body​

Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?

From the choices provided below, list the reagent(s) in order that will react with cyclopentanone to form the compound shown below.

Rays from the sun are not considered matter true or false