A) Living things are made up of cells. B) Matter is made up of atoms. C) Soil is made up of tiny rocks and organic material. D) Organisms exist that are too small to see with unaided eyes.
A) The organisms on the mainland and the islands were unrelated B) Organisms from the islands moved to the mainland and evolved C) All the organisms originated in North America and migrated D) A few mainland organisms populated the islands and evolved over time
A) Nervous system B) Excretory system C) Circulatory system D) Digestive system
A) The seeds are responding to the touch of the surrounding soil. B) The seeds are responding to the chemicals in the leaves and flowers. C) The seeds are responding to gravity. D) The seeds are responding to the sunlight.
A) The model is simpler than the processes taking place in the natural world. B) The model is more complex than the processes taking place in the natural world. C) The model does not accurately show the relationship between the parts of the system. D) The model accurately shows the relationship between the parts of the system.
A) The pond ecosystem included few producers. B) The algae were living in the runoff before it entered the pond. C) The runoff contained a nutrient for the pond ecosystem. D) The pond ecosystem contained too few consumers.
A) She has made a model to show how the muscular and skeletal systems produce movement. B) She has made a variable to show how the nervous and circulatory systems move blood. C) She has made a variable to show how the muscular and skeletal systems produce movement. D) She has made a model to show how the nervous and circulatory systems move blood.
A) Gills B) Air sacs C) Lungs D) Tracheal tubes
A) carbohydrates. B) water and carbon dioxide. C) chemical energy. D) radiant energy.
A) By burning B) By composting C) By reusing D) By bagging
A) nitrogen B) carbon C) phosphorus D) oxygen
A) To act as a catalyst in a chemical reaction B) To alter the temperature of the digestive system C) To break down large molecules into smaller molecules that the body can use D) To tear and grind food into smaller pieces
A) Standing motionless B) Hanging from a monkey bar on the playground C) Raking leaves into a large pile D) Holding a door shut so your sister cannot get into your room
A) adaptation B) secondary succession C) emigration D) pioneering succession
A) they prevent people from walking on the beach. B) they cause the tides to go higher. C) the roots of dune plants hold sand in place. D) they cause waves to break offshore.
A) They are much larger than Earth and are made mainly of the gases hydrogen and helium. B) They are about the same size as Earth and are made mainly of iron C) They are about the same size as Earth and are made mainly of the gases hydrogen and helium. D) They are much larger than Earth and are made mainly of iron.
A) increased gravity B) high oxygen levels C) extreme temperatures D) bright stars
A) A temperate forest B) A large city park C) A coral reef D) A desert preserve
A) The birds will eat equal numbers of red and green individuals. The ratio of red to green individuals in the population will not change. B) The birds will eat more red individuals than green ones. More green individuals will survive to reproduce. C) The birds will eat more green individuals than red ones. The ratio of red to green individuals in the population will not change. D) The birds will eat more green individuals than red ones. More red individuals will survive to reproduce.
A) Organ system B) Organ C) Tissue D) Cell
A) digestion, reproduction, and gas exchange B) immunity, digestion, and movement C) digestion, coordination, and reproduction D) excretion, transport, and gas exchange
A) Eelgrass B) Insects C) Bass D) Turtle
A) The genetic material of two parents is passed on to the new hydra. B) The new hydra has an exact copy of the parent’s genetic material. C) The new hydra has half of the parent’s genetic material. D) The new hydra looks different from the parent.
A) Chloroplast B) Mitochondrion C) Nucleus D) Cell wall
A) Physiological adaptations B) Genetic make-up C) Behavioral adaptations D) Physical characteristics |