Scientists estimate that our earth is approximately 4 billion years old by looking at

1 point
a.
samples of dirt and clay from meteorite impact sites

b.
samples of fossils found in south america

c.
samples of rock from areas of earth believed to have undergone melting and the cooling

d.
samples of wooly mammoth hair from russia

answer: glucoamylase presented optimum activity at temperature of 55â°c, and, in the glycosidic bonds from the non-reducing ends of starch, resulting in the production of glucose. source and type of fermentation can affect the enzyme's properties

credit to kalahira

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.