Answer:
A. By burning coal in a boiler to produce steam. The steam produced, under pressure, flows in a turbine, which spins a generator to create electricity
B. Wind turns the propeller-like blades of a turbine around a rotor, which spins a generator, which creates electricity
Answer:
2 oxygen atoms get released into the atmosphere because of photosynthesis
Explanation:
the oxygen gas is produced as a waste product from the plant so 2 atoms of oxygen are created and combine and form oxygen
HOPE THIS HELPS
The characteristic of life that relies on the sun is the need for energy. Every living thing needs energy in order to survive, and almost every form of life on Earth depends on the sun for this energy. The sun's energy is captured and harnessed by the process of photosynthesis.
The right answer is <span>Refractory period.
At the moment when the action potential is emitted, the fiber being depolarized, it is impossible to depolarize it again. It is, therefore, necessary to wait until the membrane potential returns to a value below the critical threshold in order to be able to excite it again. We are thus led to distinguish two periods that characterize its excitability.
An absolute refractory period: during which any stimulation, even supraliminal, is ineffective since the fiber is already depolarized.
A relative refractory period: during which a second action potential can be omitted provided that the depolarization produced by the excitation reaches the critical threshold, which implies that it is more important since the value of the resting potential has not been restored yet.</span>
