Answer:
I don't know. but a human can swim inside an blue whales main heart aterary comfortably.
Explanation:
plz mark me brainlyist :)
A Muscle Contraction Is Triggered When an Action Potential Travels Along the Nerves to the Muscles. Muscle contraction begins when the nervous system generates a signal. The signal, an impulse called an action potential, travels through a type of nerve cell called a motor neuron.
D. a cell wall.
reasoning: in a prokaryotic cell, they have no nucleus or organelles. a cell wall is the only answer that is neither of those.
Around 40% of living ferns are tropical epiphytes (plants that live on the surface of another plant), a reality that backings the theory that the starting point and inevitable control of angiosperms in tropical woodlands both uprooted and made new open doors for other plant ancestries.
