Man with a beard and sunglasses wearing a white shirt

Black and white drawing of a plant cell

Painting of a house with a thatched roof

Black and white drawing of a plant with leaves and flowers

Black and white drawing of a man sitting under a tree

Black and white drawing of a tree in the middle of a field

Chinese banknote with a picture of a train on it

Molecular model of a peptide molecule on a white background

Hexagonal chess board with a blue background and a chess piece in the…