Reptiles are cold-blooded air-breathing vertebrates. A tough leathery skin that has embedded scales covers their body. Most reptiles lay eggs, though some give birth to fully-formed young.

This group includes:
crocodiles and alligators, turtles, snakes, and lizards and tuatara
Birds are warm-blooded air-breathing vertebrates. Their body is covered with feathers. Birds have beaks, wings and scale covered legs. All birds lay eggs that are covered with a calcium carbonate shell.
Insects are cold-blooded invertebrates covered by an exoskeleton. Their body consists of three regions: head, thorax and abdomen. They have antennae and six legs. They make up 75% of all the animal species on earth.
Mammals are warm-blooded air-breathing vertebrates. Their body is covered with hair. All mammals feed their young milk. Most mammals give birth to miniature versions of themselves.

This group includes:
Monotremes - duckbilled platypus, echidnas, Marsupials - opossums, kangaroos, and Placentals - most other mammals
Plants are multicellular, nonmobile, photosynthesizing organisms adapted to live on land. They consist of leave and/or stems that capture the sun's energy and an underground root system.

This group includes:
moss and liverworts, ferns, conifers, and flowering plants