9-1 Collecting data in ecology

Identify the piece of apparatus in the image

Why is a random number generator is used to select coordinates for sampling?

• To make the sampling easier

• To avoid bias

• To save some time

• It is cheaper

State the mode for these values: 2,3,4,4,5,5,5,6,6,7,8

Calculate the mean for these values: 45, 51, 55, 60, 69

Identify the term for a relationship between two variables

• Characteristic

• Adaptation

• Correlation

• Biotic factor

Identify the line represented by the tape measure in the image

What term describes the populations of different species living in a habitat?

• Community

• Ecosystem

• Chracteristics

• Biome

What term describes the middle number in a list of numbers?

• Average

• Mode

• Mean

• Median

What term describes the place where an organism usually lives?

• Community

• Population

• Habitat

• Species

What term describes a living factor of the environment e.g. competition?

• Abiotic

• Trophic level

• Characteristic

• Biotic