Explain the need for a null hypothesis, especially in ecology and evolution. What does a null

hypothesis accomplish?



What will be an ideal response?


A null hypothesis is a statement of what a researcher would see if the hypothesis being tested is wrong.
Ecologists usually tackle systems that are too complex to control, so a null hypothesis anticipates, or
provides alternative hypothesis to answer questions.

Biology & Microbiology

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How would acidification of seawater affect marine organisms? Acidification of seawater would _____

A) increase dissolved carbonate concentrations and promote faster growth of corals and shell-building animals B) decrease dissolved carbonate concentrations and promote faster growth of corals and shell-building animals C) increase dissolved carbonate concentrations and hinder growth of corals and shell-building animals D) decrease dissolved carbonate concentrations and hinder growth of corals and shell-building animals

Biology & Microbiology

Which of the following types of radiation is nonionizing and has the shortest wavelength?

A) ultraviolet light B) infrared radiation C) microwaves D) X rays E) gamma rays

Biology & Microbiology

The monomorphic fungus Rhizopus is a(n)

A) common bread mold. B) toxic mushroom. C) opportunistic pathogen. D) true pathogen. E) common bread mold and an opportunistic pathogen.

Biology & Microbiology

Fish have scales that enable them to live in a water environment. This is an example of

A. metabolism. B. homeostasis. C. cellular organization. D. development. E. adaptation.

Biology & Microbiology