Chapter 19
Biology: A Guide to the Natural World · 3 exercises
Problem 1
In what way are the bryophyte plants and the amphibian animals alike?
5 step solution
Problem 2
In many areas of human endeavor, consistency is an important quality. Why was inconsistency a critical quality in the initiation of life as we know it?
4 step solution
Problem 3
An enormously long period of time passed between the appearance of bacteria and archaea on Earth and the appearance of larger, more advanced life-forms. The seeming barriers standing in the way of the evolution of more sophisticated organisms have made some evolution experts wonder about the limits to evolution on planets other than Earth. One expert has speculated that we human beings are fated to find out that, while we are not alone in the universe, we are going to be lonely in it. What's the meaning of this remark?
4 step solution