MARINE BIOLOGY ACCESS CODE ONLY
10th Edition
ISBN: 9781260041569
Author: CASTRO
Publisher: MCG
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Chapter 1, Problem 4CT
Many species of whale have been hunted to the brink of extinction. Many people think that we do not have the right to kill whales and that all whaling should cease. On the other hand, in many cultures whales have been hunted for centuries and still have great cultural importance. People from such cultures argue that limited whaling should be allowed to continue. What is the role that science can play in deciding who is right? What questions cannot be answered by science?
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Which statement is accurate about natural selection?
It is a biological process that prevents species from adapting to significant changes in their environments.
It is a biological process that leads a population to have a widespread expression of an advantageous trait.
It is a biological process that allows a population to have a competitive advantage in many environments.
It is a biological process that causes certain traits to be expressed less with each subsequent generation.
Which is NOT a component of evolution by natural selection?
Group of answer choices
Organisms compete for resources.
Organisms adapt due to environmental changes.
Species are fixed.
Individuals have different reproductive success.
It has taken millions of years for the ancestors of whales to change into what we know today, as indicated in the diagram below.
Based on your knowledge of evolution, which of the following is a reasonable explanation of why the organisms in the diagram changed over 25 million years?
Question options:
As the environment changed the food sources became more difficult to obtain so characteristics that allowed the organisms to hunt in an aquatic environment became more advantageous.
As the environment changed the temperature became too hot and the organisms began to move to a more aquatic environment to keep cool.
As the environment changed the food sources became more difficult to obtain so the organisms decided to change their characteristics to ones that would be beneficial when hunting in an aquatic environment.
As the environment changed the predators on land became better adapted to hunting the whales ancestors forcing them to live in more aquatic…
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