They produce oxygen they are used as shelter, they are used for blocking the shade, they sustain other animals that sustain the planet and us.
If organisms that lived there before had exceeded the carrying capacity then the ecosystem would no longer be able to sustain life
Answer: simple . They just ask you questions on how you are doing , not all teachers will give you math questions or biology questions . Ask her what the topics will be about .
A person whose body weight is more that 20 percent above the recommended level is categorized as obese.
Hope this helps!