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 is A. No mate is required for asexual reproduction
Answer:
mitochondria, golgi, ER
Explanation:
These folds have a great advantage for mitochondria as they increase the surface area where chemical reactions occur.
I think it would be D a pure substance