Question

Different groups of animals have evolved different organs to take in oxygen and send out carbon dioxide; but they all have certain common characters. Mention four such characters.

Answer 1

Explanation:

all animal respire to form enrgy witj the help of food food is burn in the presence of oxyegen food is broken down into simpler form to get energy

Answer 2

Common characteristics include:

1. All the respiratory surface are moist. This leads to the dissolution of the gases and easy exchanges.
2. All of the respiratory surfaces have access to body fluid that can capture the oxygen and transport it to the inner parts of the body.
3. All bodies have mechanisms to bring carbon dioxide to the respiratory surface. so, that it can be exhaled away from the body.

Most of them maintain a sustainable temperature to support this exchange.