A) It offers shelter and space
B) It allows organisms to reproduce
C) All of the above
D) It provides food and water

A) Inability to respond to stimuli
B) Ability to change color
C) Lack of reproduction
D) Growth, movement, and reproduction

A) Animal cells have a cell wall, plant cells don’t
B) Animals have chloroplasts, plants don’t
C) Plant cells have chloroplasts and a cell wall, animals don’t
D) Both plant and animal cells have the same structure

A) Changes that increase survival chances
B) Growing larger than predators
C) The ability to fly
D) Moving to different habitats

A) Energy remains constant
B) Energy moves in a circular pattern
C) Energy flows back to the producers
D) Energy flows in one direction from the sun to producers and consumers

A) It is the exchange of gases between plants and animals
B) It is the process of plants absorbing oxygen
C) It is how plants convert sunlight into food
D) It is how plants break down food into energy

A) Through competition for food and space
B) Through competition for food and space AND Through communication and cooperation
C) By ignoring one another

A) Use of language, culture, and tools
B) Ability to grow taller than other species
C) Ability to swim
D) Ability to run fast

A) Circulatory system – transport of blood and oxygen
B) Respiratory system – breaking down food
C) Skeletal system – digestion of food
D) Digestive system – circulation of blood

A) Infancy, adolescence, seniority
B) Infancy, childhood, adulthood
C) Infancy, adulthood, old age
D) Childhood, teenage years, middle age