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wasser

Wasser is the German term for water. In scientific usage, it denotes the chemical compound with the formula H2O, consisting of two hydrogen atoms covalently bonded to one oxygen atom. Water is a ubiquitous, essential substance for life on Earth, occurring in oceans, rivers, air, and living organisms.

Its molecules are polar, forming extensive hydrogen-bond networks that influence properties such as cohesion, surface tension,

Earth's hydrosphere covers about 71% of the planet's surface. Most of the Earth's water is salt water

Water supports drinking, sanitation, agriculture, industry, and energy production. Clean water management involves sourcing, treating, and

Within German-speaking contexts, the term Wasser is commonly used for water in everyday language, science, and

and
solvent
capacity.
Liquid
water
has
a
density
of
about
1.0
g
per
cubic
centimeter
at
4°C
and
expands
when
it
freezes,
an
anomaly
that
causes
ice
to
float.
Water
also
exhibits
a
high
heat
capacity
and
high
heat
of
vaporization,
buffering
climate
and
biology.
in
the
oceans;
freshwater
constitutes
a
small
fraction,
concentrated
in
glaciers,
groundwater,
lakes,
and
rivers.
The
water
cycle
transports
and
redistributes
water
through
evaporation,
condensation,
precipitation,
and
runoff,
linking
atmosphere,
lithosphere,
and
biosphere.
distributing
water,
as
well
as
protecting
watersheds
from
pollution
and
overuse.
Contaminants,
climate
change,
and
population
growth
pose
challenges
to
water
security
and
ecosystem
health.
policy.
The
concept
overlaps
with
global
discussions
of
the
hydrosphere,
freshwater
resources,
and
sustainable
water
management.