<span>productivity 20 character.
</span>
Pollen....because cones are absent in angiosperms.....flowers are absent in gymno....and seeds are also absent in gymno sperm........so and is pollen !
During the process of biological magnification , the concentration of pollutants, such as DDT or mercury, is multiplied as it passes up a food chain.
A. Air temperature
The air temperature does not effect how producers get their source of energy. Soil moisture and available sunlight are important for photosynthesis regarding energy conversions.
