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solidify
to change from being a liquid or gas to a solid form
clog
to become blocked or filled so that movement or activity is slowed or stopped
flammable
burns easily
grid
a system of wires through which electricity is connected to different parts of a region
construct
an idea or theory that may not be proved
prospecting
the activity of searching for gold, oil, or other valuable substances on or under the surface of the Earth
avenue
a method or way of doing something
pupa
an insect in the stage of being protected by a hard covering, and does not move
senescence
the fact of becoming older, and therefore being in less good condition, and less able to function well
insulation
the substance used in covering something for heat or sound
hemisphere
one of two halves of the Earth
pedigree
a list of the parents and other relations of an animal
photovoltaic
able to produce electricity from light
thermal
connected with heat
fatigue
weakness in a metal structure due to repeated bending
shaft
a long, either vertical or sloping, passage through the ground
ventilation
the movement of fresh air around a closed space
plant
machines used in industry
lethal
able to cause death; extremely dangerous
potent
powerful, persuasive, or effective
synthetic
an artificial substance or material
amphibious
able to live or operate on land or in water
specimen
a single example of something, especially an animal or plant
mutation
the way in which genes change and produce permanent differences
enigma
something or someone mysterious and impossible to understand
intensity
the strength of something
infestation
a large number of insects, rats, etc., causing damage
stamina
the physical or mental strength to do something difficult and will take a long time
hydraulic
machines operated by using power from the pressure of water or another liquid
terrestrial
animals living on the land rather than in the water or air
instinctive
behaviour or reactions are not thought about, planned, or developed by training
intuitive
based on feelings rather than facts or proof
interplay
the effect that two or more things have on each other
paradox
a person, thing, or situation that has two opposite features and therefore seems strange
unravel
make a complicated subject known or understood
impurity
the fact that a substance is dirty or lower in quality
resonate
to continue to have a powerful effect or valu