What are the two main organs of the cardio respiratory system?

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain

In the respiration-photosynthesis cycle shown above, what are the products of cellular respiration that belong in box 2?

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.