1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
katrin2010 [14]
3 years ago
15

you have selected the following prediction to test: Previously thinned forests will have higher tree survival than adjacent fore

sts that were not thinned. Now you need to define the key variables that you will use to test this prediction. For the following variables, sort them as independent variables, dependent variables, or variables that should be controlled (held constant)1. thinning or no thinning before the fire elevation of the site 2. dominant tree species 3. tree survival rate after the fire A. Independent variableB. Dependent variable C. Controlled variable
Biology
1 answer:
Softa [21]3 years ago
8 0

Answer:

A. Independent variable 2. dominant tree species

B. Dependent variable  3. tree survival rate after the fire

C. Controlled variable 1. thinning or no thinning before the fire elevation of the site

Explanation:  

A. An independent variable doesn't undergo changes during the experiment because it is not conditioned by other variables in the experiment. In this example, dominant tree species represent a variable that is independent of the experiment itself.

B. A dependent variable is those that you need to measure and depends on the other factors in the experiment. In this example, tree survival is dependent on the factors that affect the results (i.e. humidity in the trees, presence of resinous material in the trees that are non-combustible, etc.)

C. A controlled variable is those that we use to observe an expected outcome in the experiment and therefore it is used to compare with the test group. In this case, thinning or no thinning are used as positive and negative controls, respectively, because they enable their comparison with the test group in the experiment.  

You might be interested in
What is the function of the Nucleus?
Deffense [45]

Answer:

C

Explanation:

6 0
2 years ago
Read 2 more answers
Imagine that you want to breed a species of rose that has a wonderful smell. You have many different types of roses, but none of
Firdavs [7]
I think the answer is c..
7 0
3 years ago
Read 2 more answers
Tropical rain forests and coral reefs are examples of ecosystem with low biodiversity. True or False?
oksano4ka [1.4K]
False. Tropical rain forests and coral reefs each have many different species living among them. Therefore, They would have a high biodiversity. Hope this helps!
3 0
3 years ago
Read 2 more answers
Which drug can cause weight gain, acne, high blood pressure, and liver and kidney tumors?
andrew11 [14]
Alcohol and marijuana
3 0
3 years ago
Lack of ______ has been linked to increased risk for autoimmune diseases. zinc iron vitamin C vitamin D
Eva8 [605]
Lack of vitamin D has been linked to increased risk for autoimmune diseases.
Hope that helped you.
5 0
3 years ago
Other questions:
  • How to use atomic number in a sentence
    10·1 answer
  • Amino acids can form a large molecule called
    14·1 answer
  • Gonorrhea is transmitted by ____. 1. contact with blood and body fluids 2. coughing or sneezing (droplet or aerosol) 3. mucous m
    11·1 answer
  • PHOTO ATTACHED <br><br> PLS HELP ME ASAP!!
    15·1 answer
  • A cell is considered cancerous when it acquires a mutation that makes it unable to regulate its cell cycle and, as a result, div
    13·1 answer
  • The term for fungi that decompose dead organic matter is
    11·2 answers
  • A tool used in classification is
    6·1 answer
  • Which of the following statements about daughter cells are true? (Select all that apply.)
    9·1 answer
  • PLS HELPPPPPPP!!!!!!!<br> HOW IS THE MICROSCOPE RELATED TO THE ENVIRONMENT??????????
    6·1 answer
  • How hazardous waste can be managed by producing less of it?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!