Why do wolves have to hunt deer over a larger territory than the deer require for grazing?
When any living thing feeds on another organism, not all of the food energy is used; some energy is lost from the system. Additional energy is expended through respiration and movement. At each successive trophic level, the amount of energy required becomes greater. As the flow of energy decreases with each successive trophic level, the biomass also decreases.
You might also like to view...
Which of the following variables would be used to estimate potential evapotranspiration?
A. precipitation and humidity B. temperature and precipitation C. wind speed and latitude D. precipitation and evaporation E. temperature and latitude
The result of China's policy of moving industry inland between 1949 and 1976 was
A) exports increased enormously. B) exports plummeted. C) the capital was moved inland. D) inland areas became rich, while the coast stagnated.
Which of the following is the most strongly supported by extensive hypothesis testing?
A) observation B) educated guess C) theory D) hypothesis E) speculation
Which of the following will occur if the temperature of a gas is increased from 20 K to 40 K at constant pressure?
A) The volume will double. B) The volume will be halved. C) The volume will decrease slightly. D) The volume will increase slightly.