ANIMALS | Two puppies playing together
NATURE | The desert has cacti
BUILDINGS | A high-rise building
BUILDINGS | A house with a balcony
PLANTS | A sprig of flowers and an envelope
ANIMALS | a kangaroo hops across a vast, flat plain under a clear sky
TRANSPORTATION | High-speed rail
PEOPLE | A pair of siblings
TRANSPORTATION | a bicycle leaning against a tree in a park
PEOPLE | A pair of sisters