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