Answer:
The options are not correctly arranged; the correct arrangement is:
a. matter
b. photosynthesis
c. radiation and reflection of light
d. trophic levels
e. Heat resulting from respiration
Explanation:
Every living organism needs energy for their life functions. This energy is obtained by breaking down food in form of organic molecules (glucose). The organic molecule (glucose) is gotten when organisms feed on one another, hence, most organisms are called heterotrophs. An exception to this way of obtaining food is autotrophs, which are organisms that have the ability to synthesize their own food. They are referred to as Producers in an ecosystem because they start the energy flow in a food chain. Heterotrophs called consumers feed in these producers to obtain energy which in turn feed on one another.
The energy obtained by one organism is transferred to another when it is fed upon. However, each organism uses most of the energy to perform their own life processes e.g. respiration and hence, some energy is lost as heat in the process.
Respiration is a catabolic process that involves breaking down of organic molecules. It results in a metabolic heat loss.
