Taya observed a plant that is small and grows close to the ground because it does not have the water transport structures required to grow taller.

Which plant phylum did this plant most likely belong to?

conifers
ferns
mosses
flowering plants

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.