Fossil records can be studied to determine how organisms change through time. Which of the following methods for studying organisms could LEAST likely be accomplished by studying fossil record?

Which of the following is evidence to support the idea that two different species might have a common ancestor?

Fossils help scientists classify extinct species and determine their relationships to current species. Fossils provide the MOST information about extinct species--

Natural selection results in--

Animals that are the least specialized generally stand the best chance of survival when the environment suddenly and drastically changed because they are able to--

Lamarck was an early scientist who studied the development of characteristics in organisms over time. Which of the following choices best describes his views on how organisms change over time?

Over many generations, unrelated or distantly related species may come to resemble each other due to —

Two plant species found in a dry region of the western United States exhibit vastly different abilities to survive. Species A has very slow stem growth and few leaves but is very abundant. Species B has rapid stem growth and many leaves but is very rare. Which hypothesis is most likely supported by this information?

Which of these is a common adaptation for mammals in an aquatic environment?

Which of the following is evidence to support the idea that two different species might have a common ancestor?

An important feature of modern classification systems is that they —

Escherichia coli is the scientific name of a bacterium. What category of classification is Escherichia?

What structure is common to all five kingdoms of living organisms?

According to the biological definition of a species, which organisms listed below would belong to the same species?

A biologist has just discovered a new life form. The newly described organism is multicellular, does not carry on photosynthesis, and absorbs nutrients from the environment. It is composed of eukaryotic cells with cell walls. In which kingdom would the organism be classified?

Which of these is the greatest limiting factor for plants that grow on the floor of a rain forest?

The maximum number of members of a species that an environment can support is called its--

Which level of a food chain has the most food energy available

A model used by evolutionary biologist to represent evolutionary history among species is called a

Which best helps scientists determine the age of fossils?

A student believes that frogs and toads evolved from the same species. What should the student review to investigate this hypothesis?

Which skull belongs to a herbivore?

The skulls below belong to different animals. Which skull belongs to the animal that is probably unrelated to the other three?

Which of these best enabled scientists to determine the approximate age of fossils?

Which statement is NOT a part of the evolutionary theory?

Many modern theories of evolution differ from Darwin's theory because we now have more information concerning --

The moths in the illustration below are the same species, just different variations. They live on the bark of trees. What would be the most likely outcome if the environment where these moths live changed because air pollution caused the bark of the trees to be covered with black soot?

Charles Darwin proposed his theory of evolution based on observations of nature. Which observation that contributed to his theory is illustrated by this population of beetles?

A group of ponies lives in the Chincoteague National Wildlife Reserve in Virginia. The development of longer legs over time would be selected for if--

Which scientist is credited with the idea of natural selection?