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