What is probably the greatest harm caused by non-native plant species?
A economic shift
B. biodiversity increase
C. food chain disruption
D. other species' extinction

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.