Answer:
Technological advances increase energy efficiency because these improvements lower the amount of energy a product uses while performing at the same level. ... By doing this, not as much energy needs to be expended in order to use heating and cooling systems. Heating and cooling the housing efficiently is also important.
Energy flows up a food chain, from the primary producers to the primary consumers, to the secondary consumers, up to the tertiary and then quaternary consumers. Energy flows when one organism eats another lower in the food chain, the energy is transferred by heat and movement, some though is lost. They eat each other but it only gets half the energy stored. A food web is similar - it is just a series of food chains.
The end of a difficult time (aka hope )
You would find scales on a bird is it feet
