A) Increased predator populations B) Reduced prey populations C) Increased volcanic activity D) Decreased plant growth
A) Blue mussels with thick shells attract more crabs than mussels without thick shells. B) Blue mussels with thick shells catch more food per day 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 grow in larger colonies than mussels without thick shells.
A) Air pollution and acid rain killed off all the tropical plants and animals. 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) Tropical animals ate all the tropical plants and everything died out.
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 average body length in the population decreased. B) The entire population was killed by the toads. C) The entire population became resistant to the toads. D) The average body length in the population increased
A) Dividing the United States into two political parties B) Building a ship for two of each animal C) Creating the idea of evolution D) Proving that the biggest and strongest animals are always at an advantage in natural selection.
A) False B) True
A) An increasing number of children B) A changing environment C) Inability to have children D) Ability to have children
A) The living world always stays the same B) Natural Selection is a result of evolution C) Closely related species do not have common ancestors D) Evolution is a rapid process
A) Evolution occurs so slowly that it is not possible to determine that it has happened in less than a million years B) The environment near these cities has always favored dark colored moths C) A change in an environment can result in the evolution of species living there D) Natural Selection does not occur in cities |