Answer: From their food.
Explanation: They convert the food they eat into energy which helps them generate heat.
Answer:
Explanation:
"Animals, plants, and fungi often have many different organs whose different functions are integrated, enabling multicellular organisms to maintain themselves, grow, and reproduce. Two or more tissues that work together to get a job done form an organ. A group of organs that works together to perform a certain job is an organ system. Organ systems found in plants, animals, and other multicellular organisms allow these organisms to function more efficiently."
A plastic cup
I'm sure this is the answer
An invasive species because it isn't naturally from central park.
