I think it is a petrified fossil but you didn't give any choices
Autotrphs, vary in size, unicellular and multu celluar, come in many colors.
This will probably help you: https://quizlet.com/4965961/plant-like-protists-flash-cards/
The carry the deoxygenated blood from the heart to the lungs and Pulmonary veins do the opposite!
A.)Scientists look for fossils that could be common ancestors on the different
continents, showing that the common ancestor once existed on one or more
