B2.4 - Organisms And Their Environment Flashcards

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1
Q

What are the physical factors that affect organisms? (5)

A
  1. Temperature.
  2. Availability of water.
  3. Availability of oxygen and carbon dioxide.
  4. Availability of nutrients.
  5. Amount of light.
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2
Q

What is a quadrat?

A

A square frame enclosing a known area.

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3
Q

Quadrant sampling is ___.

A

Random.

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4
Q

What is a transect line?

A

A line along which you collect data.

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5
Q

What makes an investigation reliable?

A

That it is repeatable and reproducible.

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6
Q

How can you make your results more reliable? (2)

A
  1. Take a larger sample size.

2. Use random samples.

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7
Q

How can your results be made valid?

A

By controlling all the variables.

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