Whenever fossil fuel (coal, oil and natural gas) is burnt it releases all the carbon dioxide that has been stored up for millions of years. This CO2 adds to the greenhouse gases in the atmosphere and is causing global warming.
Fossil fuel is burnt in any transport using the combustion engine, like cars and trucks. Fossil fuel is also burnt in electricity power stations to generate electricity.
When you burn fossil fuels it releases mostly CO2 (carbon dioxide) This traps the heat that reaches the earth from the sun. That causes the greenhouse affect.
Burning fossil fuels also release Sulphur dioxide and various nitrogen oxide. When these gases mix with clouds they form dilute sulphuric acid and dilute nitric acid. That falls as acid rain.
Answer:
The chance of a woman with an AB blood type and a man with an O blood type having a child with O blood is 0%.
Explanation:
A mother with blood type AB (AB) will pass either antigen A or antigen B to the offspring, while the father with blood type O (OO) will not pass any antigen.
The result of an AB X OO cross would be
Alleles O O
A AO AO
B BO BO
For this reason, the offspring of this couple will be
- <em>Blood type A (AO) 50%.
</em>
- <em>Blood type B (BO) 50%.
</em>
- <em>Blood type O (OO) none.
</em>
Heredity of blood type depends on the presence of surface antigens on the erythrocyte membrane. Blood type O occurs in persons whose red blood cells do not possess surface antigens A or B.
Surface antigens are what determine blood type, so
:
- <em>The presence of antigen A determines blood type A.
</em>
- <em>Blood type B depends on the presence of antigen B.
</em>
- <em>Blood type AB has both antigens.
</em>
Blood type O has no antigens, and for blood type O to manifest, it must have both alleles for O.
A mother AB and father O cannot have offspring with blood type O.
Answer:
Metaphase
Chromosomes line up at the metaphase plate, under tension from the mitotic spindle
It would be B- Stones
hope its correct!!
Answer:
The correct answer is - a. true.
Explanation:
The chloroplast is surrounded by inner and outer membranes. These membranes help in separating the inner compartments and structures from the cytosol Inside the chloroplast. These various membranes and compartments play various roles during photosynthesis.
For instance;
a) stroma- the Calvin cycle takes place in the stroma
b) thylakoid membrane - the light reactions takes place here
c) envelope membranes- the inner and outer membranes of the chloroplast