The ecosystem requires a constant input of energy because energy cannot be stored. The enrgy always gets converted for supporting life in the ecosystem. Some amount of energy is also lost during this conversion. So if there is not a constant supply of energy, then the ecosystem will ultimately breakdown. In case of humans, the energy is received by consuming food. The energy of the food geets converted to the enrgy that helps a human being to complete his daily chores. So energy is being lost at every step. To regain this energy the humans have to eat food regularly. This way the humans need a constant supply of energy to survive. It is the same in the case of all living things in the ecosystem.
1 more, because in 24 hours cell A can divide 4 times and cell B can only divide 3.
It's Herbivores because herb means plant.
Answer: Water
The ideal percentage for adult women ranges between 45 and 60%, while for adult men between 50 and 65% of the total body. This makes the adult human body to average around 55-60% water. Athletes are recommended to have 5% more body water than the average adult human body range.