Which list correctly aligns the levels of organisms from the least to the most complex?

Did the universe cool off or get hotter as it expanded after the 'big bang"?

These two squirrels live in the same ecosystem. what type of interaction do the images represent? a. direct competition b. mutualism c. interference competition d. symbiotic e. indirect competition

To safely control the traffic flow and protect workers near public roadways and moving construction equipment use you could use