What is the difference between a tissue and an organ?

What are some aquatic organisms that live in cold water temperatures?

After fertilization, which type of cellular division is responsible for the growth and development of a complex, multicellular organism?

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