I am confused between A & E.
A: The quantities of dissolved salts deposited by rivers in the Earth’s oceans have not been unusually large during the past hundred years.
Seems correct coz unusually high deposits during the recent century will hamper the calculation which is based on the assumption that each century the amount salt deposited is approximately constant.
E.None of the salts carried into the Earth’s oceans by rivers are used up by biological activity in the oceans
The biological
...
A: The quantities of dissolved salts deposited by rivers in the Earth’s oceans have not been unusually large during the past hundred years.
Seems correct coz unusually high deposits during the recent century will hamper the calculation which is based on the assumption that each century the amount salt deposited is approximately constant.
E.None of the salts carried into the Earth’s oceans by rivers are used up by biological activity in the oceans
The biological
...
