Question 4: It was initially thought that the rains were colored by fallout
from a hypothetical meteor burst, but a study commissioned by
the ________ found that the
rains had been colored by airborne spores from locally prolific terrestrial algae.
Question 6: The color was found to be due to the presence of a large amount
of spores of a lichen-forming
________ belonging to the genus
Trentepohlia.
Question 7: [5]
The strong orange colour of the algae, which masks the green of the
chlorophyll, is
caused by the presence of large quantities of orange ________ pigments.
Question 9: [14]
Colored rain is by no means rare, and can often be explained by the
airborne transport of dust from ________ or other dry regions which
is washed down by rain.
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