Animals on farms can be kept indoors or outdoors. In an experiment a student compared the heat loss from animals kept indoors and outdoors in winter.

Here is the solution to the question:

ii) State two reasons why not all the energy in the microscopic plants is transferred to the small fish.

1. Not all parts of the microscopic plants are consumed by the small fish. Some parts may remain uneaten or die and decompose.
2. The microscopic plants use a significant portion of the energy they obtain for their own life processes, such as respiration, growth, and reproduction. This energy is lost as heat to the environment and is not transferred to the small fish.