In which type of environment are plants most likely to use a c4 pathway of carbon fixation?

Which element is used in photosynthesis found in atmosphere and fixed by bacteria?

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

Which best describes this behavior? it is beneficial only to the males that do not fertilize eggs. it is beneficial only to the female workers that are not fertilized. it is beneficial to each one of the individual colony members. it is beneficial to the whole species, but not to all of the individual members.