The simple answer is that in a battery the chemical reactions that produce the electrical current are produced from materials that are already in the battery itself, whereas in a fuel cell, the reactants, almost always Hydrogen and Oxygen are fed to the cell like an external fuel.
. However, while a battery makes electricity from the energy it has stored inside the battery, a fuel cell makes its electricity from fuel in an external fuel tank This means that while a battery may run dead, a fuel cell will make electricity as long as fuel is supplied. For hydrogen fuel cells, hydrogen is the fuel and it's stored in a tank connected to the fuel cell. When hydrogen in the tank runs low, you refill it, or replace it with a full tank.
Answer:
speech
Explanation:
humans and chimpanzees are different mainly on the significant difference on being able to use speech by humans and not used by chimpanzees. Moreover, humans have such a powerful brain and which provides logics that enable them to carry out more works than any other of their species.
Answer:
because
Explanation:
It is an Incomplete question and the complete question is
All healthy, highly productive ecosystems provide which of these essential ecosystem services that involve gases in the atmosphere?
A. increasing carbon dioxide levels in the atmosphere by the action of plants and animals.
B. removing carbon dioxide from the atmosphere and storing carbon in the tissues of organisms.
C. removing water vapor from the atmosphere and using it to support plant growth.
D. removing methane from atmosphere and storing it's carbon and hydrogen in the tissues of organisms.
Answer:
The answer is removing carbon dioxide from the atmosphere and storing carbon in the tissues of organisms.
Explanation:
The water and carbon dioxide are byproducts and in which the photosynthesis removes CO2 from the atmosphere and replaces it with O2. In case of respiration it takes O2 from the atmosphere and places it with CO2.
To remove the CO2 it is directly put out of the air and burried it under ground saline aquifers this process is known as carbon capture and sequestration.
Sequestration is a process in which CO2 is removed from atmosphere and stored in the soil carbon pool. This process is mainly done through photosynthesis.
Answer: Mercury,Mars,Venus,Earth,Uranus,Neptune,Saturn,Jupiter
Explanation:
Chloroplasts are found in plant cells.chloroplasts absorb sunlight and when used with water and carbon dioxide to produce food for the plant (the food is mostly called sugar for the plants).
