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