How did the sumerians interact with their environment? ?

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers

Last week i was assigned a thematic. we have groups of three but the people i was assigned with haven't been in school for days. i would appreciate if anyone can me with my thematic . i highlighted most of the important steps and i circled my thematic topic. in desperate need : ( its due on february 19

Will someone me with this.. specialized cells which perform a particular function form: tissues organs or organism