Food Chains and Energy, Drawn

Read a food chain and an energy pyramid instead of being told about them.

8 questions, free, marked as you go with a worked explanation on every one.

What this covers

A drought wipes out most of the producer level in the chain shown. What happens at the fourth level?
The arrows in the chain shown all point the same way. What do they represent?
The energy pyramid shows why food chains are short. What is the reason?
The pyramid shown starts with 20000 kJ in the producers. Using the ten percent rule, how many kilojoules reach the third level up from the producers?
Which statements does the chain shown support? Select all that apply.
A pesticide that does not break down is sprayed on the producer level. Where in the chain shown would the concentration be highest?
Which level of the pyramid shown always holds the most energy?
In the pyramid shown, if the first level of consumers holds 900 kJ, roughly how many kilojoules did the producers below them hold?