-
Water PNG Picture Image with Transparent Background,Water PNG files Format: PNG Image
Resolution: 996x720
Size: 817 kb -
Water PNG Free Download,Water PNG Image Picture Format: PNG Image
Resolution: 2207x2718
Size: 1724 kb -
png clipart Water download png image,Water png free picture Format: PNG Image
Resolution: 600x600
Size: 305 Kb -
Download free Water drops Transparent Background Images PNG,Water drops PNG Format Format: PNG Image
Resolution: 2294x2694
Size: 1971 kb -
Water Lily PNG Transparent HD Photo,Water Lily Background Transparent PNG Image Format: PNG Image
Resolution: 525x525
Size: 241 Kb -
Water drops png image free download,water drops png transparent picture Format: PNG Image
Resolution:
Size: -
Water PNG Transparent HD Photo,Water Background Transparent PNG Image Format: PNG Image
Resolution: 534x700
Size: 242 Kb -
HD transparent background Watermelon png free download,Watermelon png transparent file Format: PNG Image
Resolution: 647x528
Size: 107 Kb -
Free download Fishing boat PNG Transparent Background Picture,fishing boat free Photoshop PNG Format: PNG Image
Resolution:
Size: -
Free download Water drops PNG Transparent Background Images,water drops Photoshop PNG Format: PNG Image
Resolution:
Size: -
Water drops PNG Picture Image with Transparent Background,Water drops PNG files Format: PNG Image
Resolution: 3398x3576
Size: 2495 kb -
Water drops PNG HD Quality,Water drops PNG free download Format: PNG Image
Resolution: 2963x2814
Size: 1533 kb -
Water bottle aquafina PNG Image With Transparent Background,water bottle aquafina Background PNG Format: PNG Image
Resolution:
Size: -
Water Bubbles PNG Transparent HD Photo,Water Bubbles Background Transparent PNG Image Format: PNG Image
Resolution: 1024x768
Size: 157 Kb -
Download free Water Buffalo Transparent Background Images PNG,Water Buffalo PNG Format Format: PNG Image
Resolution: 640x473
Size: 224 Kb -
Water Purifier PNG Transparent HD Photo,Water Purifier Background Transparent PNG Image Format: PNG Image
Resolution: 888x970
Size: 84 Kb -
Water Bubbles PNG HD Quality,Water Bubbles PNG free download Format: PNG Image
Resolution: 1678x1225
Size: 662 Kb -
-
Water Drops PNG Transparent HD Photo,Water Drops Background Transparent PNG Image Format: PNG Image
Resolution: 3330x3330
Size: 1938 Kb -
Reverse Osmosis Water Purifier PNG HD Quality,Reverse Osmosis Water Purifier PNG free download Format: PNG Image
Resolution: 1295x1215
Size: 920 Kb
Water is a transparent and almost colorless chemical substance, which is the main component of the earth's streams, lakes and oceans as well as the fluids of most organisms. Its chemical formula is H2O, indicating that its molecule contains one oxygen and two hydrogen atoms, which are connected by covalent bond. Water strictly refers to the liquid state of the substance which exists generally under the standard ambient temperature and pressure. But it also generally refers to solid (ice) or gas (steam or water vapor). It also occurs in nature as snow, glaciers, ice bags and icebergs, clouds, fog, dew, aquifers and atmospheric humidity.
Water covers 71% of the earth's surface. This is crucial for all known life forms. On earth, 96.5% of the earth's crust water is found in the ocean, 1.7% in groundwater, 1.7% in glaciers and ice sheets in Antarctica and Greenland, and very small in other large water bodies, 0.001% in the air as steam, clouds (formed by ice and liquid water suspended in the air) and precipitation. Only 2.5% of the water is fresh water, and 98.8% of the water is in ice (except for ice in clouds) and groundwater. Less than 0.3% of all freshwater is located in rivers, lakes and the atmosphere, and even less (0.003%) is contained in organisms and manufactured products. More water has been found inside the earth.
The earth's water circulates through evaporation and transpiration (evapotranspiration), condensation, precipitation and runoff, usually to the sea. Evaporation and transpiration promote precipitation on land. Large amounts of water are also chemically bound or adsorbed in hydrated minerals.
Safe drinking water is essential for humans and other forms of life, even if it does not provide calories or organic nutrients. In the past few decades, access to safe drinking water has improved almost everywhere in the world, but there are still about one billion people without access to safe water, while more than 2.5 billion people lack adequate sanitation. There is a clear correlation between access to safe water and per capita GDP. However, some observers estimate that by 2025, more than half of the world's population will face water-based vulnerability. A report released in November 2009 shows that by 2030, water demand will exceed 50% of water supply in some developing regions of the world.
Water plays an important role in the world economy. About 70% of the fresh water used by human beings is used for agriculture. Fishing in salt and fresh water is the main source of food in many parts of the world. Long distance trade in commodities (such as oil and gas) and manufactured goods is carried by ships in the sea, rivers, lakes and canals. In industry and home, large quantities of water, ice and steam are used for cooling and heating. Water is an excellent solvent for many chemicals; therefore, it is widely used in industrial processes as well as cooking and washing. Water is also important in many sports and other forms of entertainment, such as swimming, boating, rowing, surfing, sports fishing and diving.
- Acorn
- Autumn leaves
- Bamboo
- Beach
- Bonfire
- Bushes
- Cactus
- Cannabis
- Clouds
- Comet
- Conch
- Cotton
- Drops
- Earth
- Edelweiss
- Fir-tree
- Fire
- Flame
- Grass
- Green leaves
- Hurricane,tornado
- Ice
- Icicles
- Light
- Lightning
- Mars
- Meteor
- Moon
- Mountain
- Mud
- Mushroom
- Nest
- Nettle
- Palm tree
- Pepermint
- Pine cone
- Rain
- Rainbow
- Sakura
- Sand
- Sea
- Sea buckthorn
- Smoke
- Snowflakes
- Soil
- Stones and rocks
- Sun
- Thunder
- Tobacco
- Tree
- Volcano
- Water
- Wheat
- Aloe
- Aster
- Blossom
- Bouquet
- Bubbles
- Burn
- Callalily
- Camomile
- Cave
- Cedar
- Cherry Blossom
- Chinese Flower
- Chrysanthemum
- Coconut Tree
- Conifer Cone
- Crocus
- Dahlia
- Daisy
- Desert
- Energy
- Evergreen
- Field
- Firewood
- Flower
- Forest
- Forget Me Not
- Frangipani
- Gardening
- Gazania
- Gemstone
- Gerbera
- Gladiolus
- Grapevine
- Green Energy
- Ground
- Hibiscus
- Hill
- Hurricane
- Hydrangea
- Iceberg
- Island
- Ivy
- Jungle
- Lake
- Landscape
- Lasagna
- Leaf
- Leaves
- Lily
- Lily Of The Valley
- Machu Picchu
- Maple
- Marigold
- Mist
- Natural Environment
- Peony
- Petals
- Petunia
- Poinsettia
- Poinsettias
- Rainforest
- Ripples
- Rock
- Save Electricity
- Snow
- Snowball
- Spring
- Storm
- Summertime
- Sunrise
- Sunset
- Sunshine
- Tornado
- Tsunami
- Underwater
- Violet
- Water Drops
- Water Lilies
- Wave
- Weather
- White Rose
- Wind
- Winter
- Wood