Answer:
The correct answer is d all of the above
Explanation:
There are many reasons behind increasing the concentration of atmospheric carbon dioxide such as
1 Burning of fossil fuels such as coal,petroleum increases the level of atmospheric carbon dioxide.
2 Increase in Argiculture also increases the level of green house gases such as CO2.
3 Clearing of lands for increasing population and agriculture by cutting down trees also adversely effect the normal 02:CO2 ratio in the atmosphere.
The Answer to this question is b
Answer:
pollution of water. or do you mean pollutant in which case would be like garbage or oil spills
From what i know, in sickle cell anemia the blood is lack of oxygen.
The haemoglobin run from the blood cell because reacted with nitric oxide, and so thats why the shape of the blood change into sickle-shaped like.
Answer:
All mammals (including humans) have the same distinctive features. These include: fur or hair growing from the skin. mammary glands that, in females, produce milk for feeding the young.
Explanation:
