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In the energy pyramid for any given ecosystem, the most energy available is at the bottom and the least energy available is at the top.
At the bottom of the energy pyramid are the producers (plants and other photosynthetic organisms). The first group of organisms that consume the producers are called the primary consumers (herbivores). The next group of consumers are the secondary consumers, and then the tertiary consumers and quaternary consumers.
Correct Answer: B
They are called ATPase pump. they pump sodium ions out of the cells and potassium into
Norepinephrine. Intuitively, it is also called noradrenaline. The neural transmitter acts on noradrenergic receptors. Adrenal glands release the neurotransmitter into the bloodstream and is used in the sympathetic nervous system. The neurotransmitter is significant in the fight-or-flight response to stimuli.
It would be b hope you get it right