Yellow and black butterfly perched atop a white box with a label…

Group of boys standing next to each other in front of a brick building…

Portrait of a young man wearing a black coat and glasses

Black and white drawing of a plant with leaves on a white background

Black and white engraving of a man with long hair and a beard

Black and white photo of a tall building with many windows and balconies

Sculpture of a group of children playing with a dog

Cross section of a plant cell

Street with buildings on both sides of it