UNIT 7

Question 1

Different stages of technology

Answer 1

Proto-technology
Classical technology
Modern technology
Postmodern technology

Question 2

focuses on the time when early tools were developed before civilization

Answer 2

Proto-technology

Question 3

the rise of agricultural technologies and the
establishment of communities and cities that enabled the survival of civilization.

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

replaces naturally occurring products with
technologically developed ones

Answer 5

Postmodern technology

Question 6

The following are some modern technological advancements and the
impact of possible threats to extinction:

Answer 6

1. Ozone layer depletion through chlorofluorocarbons
2. Usage of fossil fuel leading to global warming and climate change.
3. Nuclear war and nuclear contamination.
4. Plastics.
5. Petroleum-based fertilizer
6. Habitat destruction.

Question 7

is the total disappearance of a species.

Answer 7

Extinction

Question 8

Two possible scenarios for the gradual extinction of human:

Answer 8

1. Individual age and replaced by other species
   more adapted to the changing world.
2. The disappearance of the ecological niche due to the abrupt changes man has inflicted in the ecosystem; the entire population reaches zero reproductive rate.