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Plants produce oxygen as a waste product of photosynthesis

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In most cases, yes. Anoxygenic photosynthesis consume carbon dioxide but does not produce oxygen.

Posted on Nov 13, 2014

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A definition of photosynthesis


photosynthesis
?f??t?(?)?s?n??s?s/
noun

  1. the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
definition of photosynthesis Google Search

Dec 12, 2016 | Cars & Trucks

1 Answer

Engine 9970014. What year was it manufactured?


List of General Motors factories - Wikipedia, the free ...

https://en.wikipedia.org/wiki/List_of_General_Motors_factories

WikipediaBecame a GM Powertrain facility in 2004. .... Arlington Assembly after the 2013 modelyear; Past production models: Escalade ESV, .... From 1984 as New United Motor Manufacturing Inc. (NUMMI), which assembled GM and Toyota vehicles.Missing: 9970014

GM Production & Manufacturing Plants Guide ' GM Authority

gmauthority.com/blog/gm/gm-manufacturing/
General Motors Manufacturing Plants. ... We've compiled the most comprehensive guide of General Motors manufacturing facilities from all around the world. ... Fairfax Assembly Plant - Fairfax, Kansas, USA.Missing: 9970014

GM Builds 100-Millionth Small-Block Engine - GM Media


Feb 03, 2016 | GMC Cars & Trucks

1 Answer

Loss of mpg on 2006 legacy Subaru


A dirty air filter will prevent adequate air from entering the engine thus reducing gas mileage. Worn spark plugs or a weak spark (defective spark coils) can do the same. A defective "upstream" oxygen sensor (in the exhasut system) can lower fuel mileage. It forces the engine computer to guess at combustion efficiency without feedback from the sensor. It will err on the "rich" side to save the engine, which means it wastes gas. A "check engine" light will be "on" if that is the problem.

In winter, more alcohol is added to gasoline in cold climates to due to the lack of photosynthesis in the region (to make oxygen for us to breath.) Reduced fuel mileage results. Alcohol burns cleaner (and cooler) but it contains less energy (BTU) per gallon than "straight" gasoline. For example, E85 won't take you as far as a tank of regular gasoline.

If your car is designed to use 87 octane fuel, there is no need to use higher octane fuel. Higher octane fuels are for "high performance" engines with increased compression ratios. High octane fuel burns "slower" in the cylinder (to help avoid "detonation") so that the engine can take advantage is its greater compression ratio and advanced igntion timing to make more power. If your Legacy has a turbo, it will likely require the use of premium gasoline to avoid "detonation" under boost. Otherwise, "cheap", 87 octane gas is fine.

Feb 11, 2015 | 2006 Subaru Legacy

3 Answers

96 Toyota Camry OBD Code P0420 Help!?


You may have a worn out catalytic converter That is what this code indicates.

May 22, 2012 | Toyota Cars & Trucks

1 Answer

What is nissan quest code p0138/p0139


P0138 - Oxygen Sensor Circuit High Voltage (Bank1, Sensor2)

P0139 - Oxygen Sensor Circuit Slow Response (Bank1, Sensor2)

The Heated Oxygen Sensor (1 or 2) located rear of catalytic converter produces an output signal relative to oxygen storage capacity of catalytic converter. Ho2S 2 signal is less active than signal produced by front oxygen sensor. This code sets when HO2 Sensor voltage is greater than 999 mV for more than 2 minutes (time depends on model. Could be as high as 4 minutes)

Symptoms: There may be no noticeable symptoms except for MIL illumination. Possible high fuel pressure can over rich the system.

Causes: A code P0138 may mean that one or more of the following has happened:
* Faulty O2 sensor
* Short to battery voltage in O2 sensor signal circuit
* High fuel pressure (not as likely)

Here are some potential solutions:
* Replace O2 sensor
* Repair short to battery voltage in o2 sensor signal circuit

Hope helps (remember to rate this answer).

Oct 11, 2010 | 2002 Nissan Quest

2 Answers

Broker wire to my O2 sensor


Try to trace the white wire that leads to the o2 sensor by unwrapping the harness that is in the vicinity of the o2 sensor. Try to fiind the wire that way. That's the way an electrical shop would do it. Resplice the wires together. You've done most of the hard work. Good luck to you. Tprev.gif next.gif --- Oxygen (O2) Sensor OPERATION All Fuel Systems Fig. 1: A standard oxygen (O2) sensor, as shown, is used in all fuel injection system covered in this manual 86734gb4.gif
Fig. 2: On non-turbocharged engines, the oxygen sensor (arrow) is mounted in the exhaust manifold 86734p07.jpg
The oxygen (O2) sensor is a device which produces an electrical voltage when exposed to the oxygen present in the exhaust gases. The sensor is mounted in the exhaust manifold or turbocharger outlet and is electrically heated internally for faster switching when the engine is running. When there is a large amount of oxygen present (lean mixture), the sensor produces a low voltage. When there is a lesser amount present (rich mixture) it produces a higher voltage. By monitoring the oxygen content and converting it to electrical voltage, the sensor acts as a rich-lean switch. The voltage is transmitted to the engine controller which changes the fuel injector's pulse width. The injector changes the mixture.

Jul 05, 2010 | 1990 Dodge Shadow

1 Answer

Where exactly is the front O2 sensor on a 1999 S70?


For 1998 Volvo V70 2.4L MFI DOHC 5cyl the Oxygen Sensor is located under vehicle, center, below front seating area, mounted in top of exhaust pipe.

The oxygen sensor produces a voltage within 0 and 1 volt. When there is a large amount of oxygen present (lean mixture), the sensor produces a low voltage (less than 0.4v). When there is a lesser amount present (rich mixture) it produces a higher voltage (0.6-1.0v).The stoichiometric or correct fuel to air ratio will read between 0.4 and 0.6v. By monitoring the oxygen content and converting it to electrical voltage, the sensor acts as a rich-lean switch. The voltage is transmitted to the engine controller. The controller signals the power module to trigger the fuel injector.

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Hope this helped (remmeber comment and rated this).

Apr 06, 2010 | 1998 Volvo V70

1 Answer

My 1999 grand prix 3800 v-6 stalls when stopped and hesitates around 2000 rpm


tough one, has many things that could be wrong..to give you some idea...Air filter, a loose air hose, gas filter,oxygen sensors, sparkplugs wires or even crossed wires will all play a role in the hesitation that your car is producing, I have 2 grand prix and one of them is hesitating on me right now, I know its the oxygen sensor but I cant fix it now, dont have the money to. I know it wastes more gas but oh well for now! Try testing first.

Mar 25, 2010 | 1999 Pontiac Grand Prix

1 Answer

O2 Sensor on a 1996 Cadillac Eldorado


Hello mrsalbert, my name is JShreader. Thank you for choosing fixya.com

Depending on which oxygen sensor you are looking for...there are several of them throughout the Exhaust System. I will start out by giving you a brief description of what and oxygen sensor is, and they're general purpose.

DESCRIPTION
Four Heated Oxygen Sensors (HO2S) are mounted in the exhaust system where they monitor the oxygen content in the exhaust stream. There is an oxygen sensor mounted in each exhaust manifold and one on each end of the catalytic converter. the oxygen sensor located in the front exhaust manifold is the Bank 2 Sensor 1 (Front) sensor. The oxygen sensor located in the rear exhaust manifold is the Bank 1 Sensor 1 (Rear) sensor. The oxygen sensor located in the Y-pipe ahead of the catalytic converter is the Bank 1 Sensor 2 (Pre-converter) sensor. The oxygen sensor located in the catalytic converter outlet is the Bank 1 Sensor 3 (Post-converter) sensor.

OPERATION
An oxygen sensor acts like a battery because it creates its own signal voltage once it reaches operating temperature. This voltage is produced when the oxygen content in the exhaust stream is different than the oxygen content in the atmosphere. A lean condition (high oxygen content in exhaust) will produce a low voltage (near 0 volts) and a rich condition (low oxygen content in exhaust) will produce a high voltage (near one volt). The PCM provides a reference signal voltage (0.45 volt) and a ground to the sensor. The PCM reference voltage is necessary because the oxygen sensors do not provide their own voltage until they reach operating temperature.

HEATING ELEMENT
the oxygen sensors also incorporate a heating element inside of the sensor housing. This heating element is energized with the ignition On and allows the sensors to reach operating temperatures quickly. The PCM can then use oxygen sensor information sooner after engine start-up.

PCM INPUTS
The PCM uses oxygen sensor information during Closed Loop operation to constantly adjust fuel control to reduce exhaust emissions. Because the oxygen sensors provide information sooner after engine start-up, exhaust emissions are reduced. Faulty oxygen sensors will cause various driveability conditions and will set a DTC.

That being said...I uploaded a .pdf for you of pictures showing the locations of ALL the oxygen Sensors on your Vehicle. You can download it by clicking HERE.

I hope this helps you. If you have any more questions or need any more diagrams, please don't hesitate to ask...Thanks again, JShreader!

Apr 01, 2009 | 1996 Cadillac Eldorado

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