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Question 18N.3.HL.TZ0.a

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Date November 2018 Marks available [Maximum mark: 1] Reference code 18N.3.HL.TZ0.a
Level HL Paper 3 Time zone TZ0
Command term State Question number a Adapted from N/A
a.
[Maximum mark: 1]
18N.3.HL.TZ0.a

An investigation into food web interactions was conducted in mesocosms in the Mediterranean Sea, off the coast of France. The effects of the addition of soil and fish on bacterial populations were tested.

Each of the mesocosms is an open ecosystem. State the property that makes the mesocosms open ecosystems.

[1]

Markscheme

there is exchange of matter/energy
OR
there is an exchange between the surface of the water and the atmosphere ✔

 eg: matter could be nutrients/gas/water/minerals/etc; energy could be heat or light

Syllabus sections