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 ...

How ASPs works?

The Web and the Internet began to really heat up and receive significant media exposure starting around 1994. Initially, the Web started as a great way for academics and researchers to distribute information; but as millions of consumers flocked to the Internet, it began to spawn completely new business models. Three good examples of innovative models include: • Amazon - Amazon (which opened its doors in July, 1995) houses a database of millions of products that anyone can browse at any time. It would have been impossible to compile a list this large in any medium other than the Web. • Ebay - Online auctions make it easy and inexpensive for millions of people to buy and sell any imaginable item. It would be impossible to do this at a reasonable cost or in a timely manner with any medium other than the Web. • Epinions - Thousands of people contribute to a shared library of product reviews. One of the Web's greatest strengths is its worldwide view a...

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...

Knowledge N Fact4u

Search This Blog