17.1 After reading the following text, answer to the question: why is it important to be sustainable when choosing a light bulb?

THE ENVIRONMENTAL IMPACT OF LED BULBS

■ Why are LED bulbs a sustainable choice?
In today’s world, environmental concerns have become part of our daily lives; for this reason, it is more and more important to make sustainable choices. As far as lightning is concerned, LED lighting has been gaining popularity due to its great environmental benefits.
Together with high energy efficiency and longevity, LED bulbs have many Characteristics which make them highly sustainable.
• Reduced toxic elements: unlike older lighting technologies, LEDs contain no dangerous materials like mercury; this means fewer toxic materials released into the environment when bulbs are disposed of.
• Lower heat emissions: LED lights emit very little heat compared to incandescent bulbs, which can help reduce the energy required for cooling in homes and commercial spaces.
• Minimal light pollution: LED lighting can be directed more precisely, preventing unnecessary light pollution, which has harmful effects on both humans and animals; moreover, they are easily dimmable, which helps saving energy.
• Sustainable manufacturing: LED lights are manufactured with a focus on sustainability, often using recyclable materials and eco-friendly production processes.
For the reasons above, people and businesses can make a significant contribution to environmental conservation by choosing LED lighting.

■ The future of LED bulbs
Studies on the spread of LED lighting make it possible to assume that LED lightning will substitute any other type of lightning by 2050, with 90-95 percent of household lighting and 80-90 percent of commercial lighting. As LEDs replace less-efficient lighting, 14-15 gigatons of carbon dioxide equivalent emissions could be avoided in residences and commercial buildings.
Moreover, other additional climate and health advantages will derive from replacing other types of lighting with solar LED technology.

Adapted from: https://drawdown.org/solutions/led-lighting aperta

17.2 After reading the text in the previous exercise, answer to the question: what is the advantage of not containing toxic materials? aperta

17.3 After reading the text in the Exercise 17.1, answer to the question: which toxic chemical used in light bulbs is mentioned in the text? aperta

17.4 After reading the text in the Exercise 17.1, answer to the question: what is the advantage of reducing heat emissions? aperta

17.5 After reading the text in the Exercise 17.1, answer to the question: which type of bulb is mentioned in the text as highly heat emitting? aperta

17.6 After reading the text in the Exercise 17.1, answer to the question: who might suffer from light pollution? aperta

17.7 After reading the text in the Exercise 17.1, answer to the question: why is LED manufacturing sustainable? aperta

17.8 After reading the text in the Exercise 17.1, answer to the question: according to the studies, when will LED bulbs substitute other types of lighting? aperta

17.9 After reading the text in the Exercise 17.1, answer to the question: to what extent will LED lighting be used in homes and businesses? aperta

17.10 After reading the text in the Exercise 17.1, answer to the question: how much difference will it make to carbon dioxide emissions? aperta