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