How much energy would be available to the next levels of the food chain?

since only 10% is passed you multiple the number given by .10

Explanation:

so 35,000*.10=3500 which is the first blank and you multiply that by .10 to get 350 and thats the second blank, then do that again to get 35 and then again and you get 3.5

i think the answer is gold im not entirely sure