Why must digestion happen before absorption can take place?

digestion breaks down the larger food particles into smaller ones so that they can be absorbed, large pieces can not be absorbed.

Explanation:

think of when you are filtering something with a sieve, only the smaller particles pass through the sieve the larger particles remain on top.

the bald eagle got 50 because everything gets 10% of what they consume and since 50 is ten % of 500 hundred that means the   grasshopper had to have consumed a plant with 5,000 calories of energy