Complete the notes below.
Write ONE WORD ONLY for each answer.
The effects of environmental change on birds
Mercury (Hg)
Highly toxic
Released into the atmosphere from coal
In water it may be consumed by fish
It has also recently been found to affect birds which feed on 31_______________
Research on effects of mercury or binds
Claire Varian-Ramos is investigating
the effects on birds’ 32_______________
or mental processes, e.g. memory
the effects on bird song (usually learned from a bird’s 33_______________ )
Findings
songs learned by birds exposed to mercury are less 34_______________
this may have a negative effect on birds’ 35_______________
Lab-based studies
allow more 36_______________
for the experimenter
Implications for humans
Migrating birds such as 37_______________
containing mercury may be eaten by humans
Mercury also causes problems in learning 38_______________
Mercury in a mother’s body from 39_______________
may affect the unborn child
New regulations for mercury emissions will affect everyone’s energy 40_______________
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