My biology is a little rusty but I think the answer is A
Answer:
Muscles contract through a chain process of electrochemical signalling between the nervous system and muscles.
Explanation:
The muscle contraction is initiated by the nervous system by sending a signal. This signal also referred to as action potential travel through the motor neuron. This motor neuron releases a chemical signal to muscle when the electrical signal carried by it reaches the neuromuscular junction (a junction where motor neuron meets the muscles).
The chemical message referred to as neurotransmitter binds to the receptors present on the muscle fibers. These receptors causes the influx of sodium ion which in turn trigger the release of calcium ion thereby initiating the contraction of muscles.
Tree is your answer.
An Organism is classified as a "living animal, plant, or single-celled life form."
A tree, is a plant, therefore, Tree is your answer
hope this helps
The answer is
D. The lower the radiant energy, the lower the frequency and the longer the wavelength.
I took the test and got it right.
Like what plant of what animal??
Because it is diffrent if the animal is....
SO pls tell meh ;D
