Question

The plants in a red-tailed hawk’s food chain produce 3 million kcal of chemical energy per day. How much energy is available to the hawk’s trophic level, assuming 90% loss at each level?

Answer 1

The amount of total energy at each trophic level decreases as it moves through, so 90% is lost at each level. This means that only 10 percent of the energy at any trophic level is transferred to the next level; and the rest is lost as heat.  

In this case, if a plant ecosystem has 3000000 kilocalories (kcal) of energy, about 300000 kcal will be transferred to primary consumers (for example grass hoppers). If the red-tailed hawks are tertiary consumers, they will get 3000 kcal of energy.

Answer 2

The energy is available to the hawk’s trophic level is 3000 kcal.

The plants in a red-tailed hawk’s food chain:

$\rm Plant \rightarrow GrassHopper\rightarrow Rabbit\rightarrow Hawk\texttt$

Given hear,

Plant gets 3,00,00,00 kcal energy.

Energy loss = 90% / trophic level.

Hawk is a Tertiary consumer.

Hence,

The hawk gets only 0.1% of producers energy

$\rm GrassHopper= \frac{0.1\times3000000}{100} \\\\\rm GrassHopper= 3000 kcal$

So we can say that the energy is available to the hawk’s trophic level is 3000 kcal.

For more about trophic level you can refer to the link:

https://brainly.com/question/13267084?referrer=searchResults