How do animals warn other animals that they are dangerous? HELP

Which of the following occurs after a natural or unnatural disturbance in an ecosystem

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

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.