Chapter XI

Question 1

Stages of technology

Answer 1

1.Proto Technology
2.Classical Technology
3.Modern Technology
4.Postmodern Technology

Question 2

This focuses on the time when early tools were developed before civilization

Answer 2

Proto-Technology

Question 3

This concentrates on the rise of agricultural technologies and the establishment of communities and cities that enabled the survival of civilization

*An act of supplying means for some pre-existing ends.

Answer 3

Classical Technology

Question 4

This is fueled by science concepts and principles which date back about 500 years ago.

Answer 4

Modern Technology

Question 5

This replaces naturally occuring products with technologically developed ones. Some are toxic most especially petroleum and its deviratives.

Ex. gasoline-powered automobiles, jet engines, plastics, synthetic fertilizers

Answer 5

Postmodern Technology

Question 6

chlorofuorocarbons were considered to be safe for use, but scientists were not able to predict their possible impact in the upper atmosphere.

CFC destroyed the ozone layer that protects the planet from the ultraviolet radiation from the sun.

Answer 6

Ozone layer depletion through chlorofluorocarbons

Question 7

Top climate scientists have predicted and projected that an average increase of 2°C would be felt by 2050.

This will cause drastic weather and climate phenomenon across the regions of the globe.

Answer 7

Usage of fossil fuel leading to global warming and climate change

Question 8

Nuclear reactors have been used in different industries as a source of energy in spite of the known threat of contamination when they malfunction.

Answer 8

Nuclear war and nuclear contamination

Question 9

were regarded as one of the most versatile and useful products in history as they were non - toxic to man. Later, however, they were found toxic to the environment as they do not enter the natural process of recycling.

Answer 9

Plastics

Question 10

are non-toxic especially when they are used solely to increase crop yield and income. Continuous use of such fertilizers, however, pollute nearby rivers and other bodies of water.

Answer 10

Petroluem-based fertilizer

Question 11

the interdependency of each life form cannot be recreated once it is destroyed.

like land alteration, deforestation and some agricultural practices contributed to global warming as these increase CO, level in the atmosphere.

Answer 11

Habitat Destruction