Um help idk much about chickens

Researchers want to use edna to look for an invasive species in the water which of the steps would be likely do last

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

Select all the correct answers. for a claim about the natural world to be considered scientific, what attributes must it have? a). it must be open to modification if new evidence doesn't completely support it. b). it must be based on scientific observations that can be repeated in a controlled setting. c). it must be applicable to future events and occurrences. d). it must be consistent with only a small portion of relevant observations or data.