True or false: bioamplification is when toxin levels get higher in each trophic level.

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.