Q4.13. Scientists are investigating how different ecosystems store carbon as biomass, which could reduce or delay the impacts of climate change. They estimate that the net primary productivity (NPP) of deciduous needleleaf forests is about 0.275 kg C /m2/yr, and that this carbon has a residence time of 160 years. What is the size of the pool of carbon stored as biomass

answer: a) a compound microscope has a greater magnification ability than a simple microscope.

explanation:

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.

the last one: artificial selection/genetic engineering

plant breeding is modifying the genetic composition of the plant - but this isn't cloning (which is specifically introducing a gene into a genome). but you are artificially selecting for the phenotype that you want.

the second one is literally genetic engineering - the gene would have been cloned first and then inserted or genetically engineered into the new plant cell (the cotton).