Organisms and their environment

Question 1

Physical factors that affect organisms:

Answer 1

Temperature.
Availability of nutrients.
Amount of light.
Availability of water.
Availability of oxygen and carbon dioxide.

Question 2

Types of sampling:

Answer 2

Random.

Systematic.

Question 3

Random sampling involves…

Answer 3

…using a random generator to select areas within an area. 10% of the total area must be sampled for reliability.

Question 4

Systematic sampling involves…

Answer 4

…systematically selecting a sample size appropriate for the area.

Question 5

What is a transect?

Answer 5

A line across a habitat. The number of organisms or species can be recorded at intervals along the transect.