A) Decreased plant growth B) Increased predator populations C) Increased volcanic activity D) Reduced prey populations
A) Blue mussels with thick shells catch more food per day than mussels without thick shells. B) Blue mussels with thick shells grow in larger colonies than mussels without thick shells. C) Blue mussels with thick shells survive and reproduce more successfully than mussels without thick shells. D) Blue mussels with thick shells attract more crabs than mussels without thick shells.
A) The climate in that area is different today than when tropical plants and animals lived there. B) Air pollution and acid rain killed off all the tropical plants and animals. C) Tropical animals ate all the tropical plants and everything died out. D) Earthquakes and volcanoes destroyed all the tropical plants and animals.
A) Only the darker variety of fish will survive. B) Only the lighter variety of fish will survive C) Neither the lighter or darker varieties of fish will survive. D) Both the lighter and the darkr fish will survive.
A) The entire population was killed by the toads. B) The average body length in the population increased C) The average body length in the population decreased. D) The entire population became resistant to the toads.
A) Building a ship for two of each animal B) Proving that the biggest and strongest animals are always at an advantage in natural selection. C) Creating the idea of evolution D) Dividing the United States into two political parties
A) False B) True
A) A changing environment B) Inability to have children C) Ability to have children D) An increasing number of children
A) Natural Selection is a result of evolution B) The living world always stays the same C) Closely related species do not have common ancestors D) Evolution is a rapid process
A) A change in an environment can result in the evolution of species living there B) Evolution occurs so slowly that it is not possible to determine that it has happened in less than a million years C) Natural Selection does not occur in cities D) The environment near these cities has always favored dark colored moths |