B2.4 - Organisms And Their Environment Flashcards
1
Q
What are the physical factors that affect organisms? (5)
A
- Temperature.
- Availability of water.
- Availability of oxygen and carbon dioxide.
- Availability of nutrients.
- Amount of light.
2
Q
What is a quadrat?
A
A square frame enclosing a known area.
3
Q
Quadrant sampling is ___.
A
Random.
4
Q
What is a transect line?
A
A line along which you collect data.
5
Q
What makes an investigation reliable?
A
That it is repeatable and reproducible.
6
Q
How can you make your results more reliable? (2)
A
- Take a larger sample size.
2. Use random samples.
7
Q
How can your results be made valid?
A
By controlling all the variables.
