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