The sudden disappearance of the dinosaurs has baffled _______ for many years.
clinicians
scientists
opponents
analysts
All of the ecosystems in the world make up the ________.
desalination
seawater
biosphere
method
One example of scientific _______ is the fact that the earth rotates on its axis as it revolves around the sun.
knowledge
equipment
method
supply
The modern scientific ______ is usually attributed to Galileo.
supply
knowledge
method
surface
The _______ once covering 26,000 square miles vanishes into desert.
seawater
biospheres
desalination
soil
The ____ is very fertile, and many of the inhabitants have acquired much wealth from the cultivation of rice.
surface
flooded
soil
seawater
We have a plentiful _____ of water.
advantages
supply
desalination
equipment
The ________ plant was to be funded by raising water rates to achieve full cost recovery.
large-scale
desalination
extreme
seawater
An _____ is a small animal that has six legs. Most insects have wings.
insect
fly
arthropod
bug
The amount of ______ is dependent on the extent of the daytime cloud cover.
surface
interest
sunlight
seawater
97% of all the water on the Earth's ______ is salt.
surface
soil
flooded
equipment
A _______ study of the benefits of dark chocolate would require many people and lots of time.
effectively
large-scale
constant
discovered
The school needs new laboratory ________.
surface
equipment
knowledge
supply
Science has _________ that there are five types of human beings.
observed
generated
discovered
flooded
Two species of blind fish, of ______ scientific interest, are found in the caves of the island.
effectively
constant
extreme
optimistic
In the rainy season this valley becomes a sea, ______ by the discharge of the Khanega.
discovered
surfaced
flooded
supplied
