The amount of energy lost at the transition between each trophic level of the pyramid of energy is about
a. 10%
b. 50%
c. 70%
d. 90%

The correct answer is option D, 90%

Explanation:

The food pyramid consists of trophic level representing the species based on their food intakes. A species at the bottom of the pyramid is a producer i.e plant and it is capable of producing food using sunlight. Now when a primary consumer consumes the plant, only 10% of  the energy is passed on to it through the plant and remaining 90% goes into waste. Like wise at each trophic level only 10 %of energy of the previous trophic level is passed on.

with the invention of the automobile, the woman of the house could drive to the store and get groceries. women were also free to socialize more. during world war ii women were allowed to work in factories to the war effort and could drive to work or ride mass transit buses to their jobs.