The feeding relationships between several marine organisms are shown in the food web below.
Based on the diagram, which of the following best describes the most likely direct effect of a decline of the small fish population on the marine food web?
1 point
1
Question 2
2.
Primary producers in a lake ecosystem store approximately 25,000 kcal/m2/yr of energy in their biomass. Which of the following identifies the most likely amount of energy available to a tertiary consumer in this ecosystem?
1 point
1
Question 3
3.
The net primary production of a pine forest on a lava flow on Mount Fuji is about 175,000kcal/m2/yr, and the plant respiration is estimated to be 115,000kcal/m2/yr. What is the total amount of energy transferred during photosynthesis for this ecosystem?
1 point
1
Question 4
4.
In a given ecosystem, producers convert solar energy into 15,000 kcal of chemical energy stored in organic compounds. Which of the following is the most likely amount of energy available to secondary consumers?
1 point
1
Question 5
5.
Which of the following best describes the net primary productivity of an ecosystem?