What lake had environmental concerns about location a paper pulp factory

Lake Baikal's

Explanation:

Ecologists and NGOs in Russia have been trying to shut down the Baikalsk Pulp and Paper Mill, which is located on Lake Baikal's southeastern shore, since it opened in 1966. According to environmentalists: The plant produces bleached cellulose.

d. new methods of assembly are introduced.

explanation:

this allows for the goods to be made on a larger scale. not faster because now it is shown to be made better, hence the greater productivity in the question. it is calling for something new to be introduced.