How do trees give earth all its oxygen?

How do trees give earth all its oxygen?

•All of earth's oxygen does not come from trees.

•Rather, the atmospheric oxygen that we depend on as humans comes predominantly from the ocean.

•According to a study, about 70% of the oxygen in the atmosphere comes from marine plants and plant-like organisms.

•These ocean-living plants release molecular oxygen as a waste product of photosynthesis (as do most plants).

•In photosynthesis, plants capture sunlight and use its energy to split carbon dioxide and water, making sugar for itself and releasing oxygen as a by-product.

•The dominance of ocean life as earth's top oxygen producer makes sense when you consider that the majority of the earth is covered with ocean.

•Of the different types of marine life providing oxygen, the dominant class is phytoplankton.

•Phytoplankton are microscopic photosynthesizing organisms that live in water.

•Phytoplankton includes cyanobacteria, green algae, diatoms, and dinoflagellates.

•Although too small to be visible to the human eye by itself, when many phytoplankton clump together they look like green ocean slime.

•The oxygen we depend on from breath to breath is provided mostly by a vast army of invisible sea creatures.

Comments

How Energy conversion from coal is done?

Single generator sets of over 600 MW are now used in the UK, though there are many smaller generators in use. A 600 MW generator can supplythe average needs of over 1 million UK households. Three or four such generators are typically installed in a single large coal-fired station which isoften sited close to a coal mine, away from the city dwellers who consume the electricity. Such generators are usually driven by a compound arrangement of highpressure, intermediate-pressure and low-pressure turbines, increasing in size as the pressure decreases. Modern turbines rotate in a speed range from 1500 to 3500 r.p.m., usually 3000 r.p.m. for the UK’s 50 Hz system. For large coal-fired plant the steam pressure could be 25 megapascals (MPa) with steam temperatures of 500–600 °C to improve the thermodynamic efficiency. In nuclear reactors, which operate under less demanding conditions, the steam is superheated to about 5 MPa and 300 °C. Modern water tube boilers are complex and have ...

All about Electronics & Instrumentation Engineering)(EI)

Vision : To be globally recognized as a seat of learning and innovation in Electronics for application to Communication, Transportation, Defence, Industry, Health Care, Entertainment, and many other consumer products. Mission : 1). To produce quality engineers in the field of Electronics and related domains. 2) To conduct research and develop products in the fields of Chip design, Communication Systems, Electronics Instrumentation, Signal Processing and other related areas with strong emphasis on critical state of the art applications. 3) To grow in the area of Design and Manufacturing of chips, boards and systems. Program Educational Objectives : I. To provide students a successful career in industry that meets the needs of national and multinational companies. II. To develop the ability among students to synthesize data and technical concepts for application to electronic product design and to solve real...

5 TOP FACTS LIGHTHOUSES

1 The builder of the Lighthouse of Alexandria, Sostratus – disobeying orders from the pharaoh Ptolemy – engraved his name and a dedication to the sea gods on the tower base. Fame 2 The technical term for the study of lighthouses is ‘pharology’, a word derived from Pharos, the island upon which the great Lighthouse of Alexandria once stood. Academia 3 George Meade built many notable lighthouses in the US during the classical lighthouse period. He is remembered in history as the winning general in the Battle of Gettysburg. War 4 The tallest lighthouse in the world is the Yokohama Marine Tower in Yokohama, Japan. The structure ﬂ ashes alternately green and red every 20 seconds. Tallest 5 Originally lighthouses were lit merely with open ﬁ res, only later progressing through candles, lanterns and electric lights. Lanterns tended to use whale oil as fuel.

Knowledge N Fact4u

Search This Blog