The process of biological evolution .a. is not supported by scientific evidence;b. results in a change in the features of individuals in a population;c. takes place over the course of generations;d. B and C are correct;e. A, B, and C are correct

The oxygen revolution changed Earth's environment dramatically. Which of the following took advantage of the presence of free oxygen in the oceans and atmosphere?a. the evolution of cellular respiration, which used oxygen to help harvest energy from organic moleculesb. the persistence of some animal groups in anaerobic habitatsc. the evolution of photosynthetic pigments that protected early algae from the corrosive effects of oxygend. the evolution of chloroplasts after early protists incorporated photosynthetic cyanobacteria

Why does the presence of extinct forms and transitional features in the fossil record support the pattern component of the theory of evolution by natural selection? Select True or False for each statement.T/F It supports the hypothesis that individuals change over time.T/F It supports the hypothesis that weaker species are eliminated by natural selection.T/F It supports the hypothesis that species evolve to become more complex and better adapted over time.T/F It supports the hypothesis that species change over time.

Fill in the blanks in the following graph, which illustrates the decay curve of a radioactive element used to date fossil structures.

If a solution surrounding a cell is hypertonic relative to the inside of the cell, how will water move?a. It will move into the cell via osmosis.b. It will move out of the cell via osmosis.c. It will not move, because equilibrium exists.d. It will evaporate from the cell surface more rapidly.

Which factor most likely caused animals and plants in India to differ greatly from species in nearby southeast Asia?a. The species became separated by convergent evolution.b. The climates of the two regions are similar.c. India is in the process of separating from the rest of Asia.d. India was a separate continent until 45 million years ago.

You set your time machine for 3 billion years ago and push the start button. When the dust clears, you look out the window. Which of the following describes what you would probably see?a. a cloud of gas and dust in spaceb. green scum in the waterc. land and water sterile and devoid of lifed. an endless expanse of red-hot molten rock

Which of the following best characterizes an adaptive radiation?a. Descendant species occupy a large geographic area.b. A single lineage diversifies rapidly, and descendant species occupy many habitats and ecological roles.c. Natural selection is particularly intense, because disruptive selection occurs.d. Species recover after a mass extinction.

What two conditions must be present for osmosis to occur?Integral membrane proteins are anchored in lipid bilayers.