A plant cell has a cell wall and an animal cell doesn’t. The cell wall keeps it from moving and protects the plant.
Photosynthesise. They take in carbon and use it to make glucose and oxygen.
The lizards have to adapt to the environment to survive. The lizards may have always ate flies/lizards but once they reached the environment that produced opposite of their eating habits, they altered their eating habits. The lizards' adaptation will give them the ability to survive within the said environment that produce certain foods.