What's the unique position occupied by a species both in terms of its physical use of its habitat and its function within the ecological community?

My question says on my assignment. read the following scenarios and decide which of the properties of life are being described. the first one is. katherine stopped on the way to school to grab some donuts. 2. because a dog cannot sweat, it has to pant in order to stay cool. 3. an elephant trun had no bone but 4,000 muscles. i have no idea what i am supposed to anwer. i can't find the answer in my notes or book that i can understand anyway

How does the carbon cycle involve an exchange of carbon

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?