Different types of cells within an organism

What is a cordon and where is it found

Where would you expect to see seedless plants, such as ferns and mosses? a. in a botanical museum, because they are all extinct b. low and close to the ground in a moist environment c. climbing high while circling the branches of another plant d. deeply rooted in a forest with a trunk that reaches 20 meters or more

Which equation is used to calculate the magnetic force on a charge moving in a magnetic field