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iVinArrow [24]
2 years ago
10

Identify the statement which is not true

Biology
1 answer:
vlabodo [156]2 years ago
8 0

Answer:

the answer will be a and b

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When focusing a specimen you should always start with the blank objective?
natulia [17]
When focusing a specimen you should always start with the SCANNING objective. Scanning objective is used to put the object you want to examine in focus. After proper focusing on the object, you can now switch to power objective.
4 0
3 years ago
Help me pleaseeeee!!
DochEvi [55]

Answer:

POLLUTANT, SOURCE AND IMPACT

Carbon Monoxide

SOURCE:- carbon monoxide main sources are from our homes, eg; wood stoves and fire place, generators, gas stoves, kerosene heaters, leaking chimneys, tobacco smokes etc

IMPACT:- carbon monoxide can cause organ failure as it reduces the amount of oxygen the hemoglobin been carried in the red blood cells to this organs in our body.

Carbon dioxide

SOURCE:- carbon dioxide can be from both human and natural source. Example of the sources includes; natural source ( ocean release, decomposition and respiration), human activities ( burning of coal, oil and natural gas, cement production etc)

IMPACT:- carbon dioxide causes difficulties in breathing as it displaces oxygen in the air.

It also increase the greenhouse effect (global warming) as more heat energy gets trapped by the atmosphere causing the planet to become warmer.

Sulphur dioxide

SOURCE:- sulphur dioxide mainly occur due to human activities such as fossil fuel combustion at industrial facilities, in ships etc.

IMPACT:- Sulphur oxide has been linked to many health effect and diseases such as cardiovascular diseases. It also causes respiratory problems, asphlegm and asthma attacks, irritation of lungs, throat and nose as well.

Nitrogen oxides

SOURCES:- nitrogen oxides also comes from human activities such as; combustion of fossil fuel, making of nitric acid, refining metals as well as petrols, explosive, food manufacturing etc.

IMPACT:- Nitrogen oxides has also been linked to many respiratory health issues such as bronchitis and wheezing. It causes the lining of the lungs to inflame there by reduce the immunity of the lungs to respiratory diseases.

Methane

SOURCE:- methane can be from either natural or human activities. The natural source includes; food digestion by cattles, decay of organic materials. Human activities such as waste management, rice production, oil and gas production etc.

IMPACT:- Methane is considered a green house gas like carbon dioxide, it contributes to the trapping of heat energy in the atmosphere which causes global warming. It is also linked to serious health issues such cardiovascular, respiratory and neurological problems.

Particulates

SOURCE:- particulates are fine tiny particles of matter found in the air, it might be in solid or liquid form. Example; dust, smoke, fumes etc. This particles can suspended in the air for an extended periods of time.

IMPACT:- exposure to particulates can cause variety of respiratory health problems such as difficulties in breathing, coughing, lungs and heart problem etc.

7 0
3 years ago
What is it true that Barack Obama wants the people listening to his speech to have
Lesechka [4]

Please finish the sentence.

5 0
3 years ago
What food could.you chose to change the packaging to make it more.convenient and more eco.friendly
marshall27 [118]
Say for instance packaged ground beef meat or ground turkey meat. u could use a bio degradable packaging instead of styrofoam and plastic.
4 0
3 years ago
The recommended order of draw for a complete blood count, prothrombin time, and cholesterol is:________
nalin [4]

Answer:

The use of the word "draw" here refers to the collection of blood samples for laboratory tests.

Step A - The first draw goes into the blood culture bottle or tube with a yellow cover.

Step B - This goes into the coagulation tube with a blue cover.

Step C - The next draw goes into the tube for non-additives. This usually has a red top

Step D - This features collection of blood into the tubes with additives. When dealing with additives, blood samples and additives it is important that the sample and additive is rigorously homogenized. This part can is broken down as follows:

  1. this goes into the SST tube. This tube contains a seperator and a clot activator and is usually is colour coded reddish-gray or gold top.
  2. This tube contains Sodium heparin and has a leaf green top
  3. This tube (PST) contains PST contains lithium heparin anticoagulant and a gel separator.  It's cover is colour coded light green
  4. This tube contains Ethylenediaminetetraacetic acid or EDTA for short. It's cover is usually colour coded lavendar
  5. This tube is labelled ACD that is Acid Citrate Dextrose. It's top is coded light yellow
  6. this tube contains Oxalate/Fluoride and it's cover must be colour coded gray.

Cheers!

4 0
3 years ago
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