Imagine a dog who steps on a pin and pulls its foot away. Look at the reflex arc of this scenari spinal cord
synapse
sensory neuron
pin in paw
B
relay neuron
motor neurons
muscle
Which of the following statements best describes the image?
The brown circle A shows neurotransmitters being released, and the blue circle B shows neurotransmitters being
absorbed
O The brown circle A is an effector, and the blue circle B is a receptor.
O The brown circle A is a receptor, and the blue circle B is an effector.
The brown circle A shows neurotransmitters being absorbed, and the blue circle B shows neurotransmitters being
released.

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

find out why you don't need to aim at such a syllable pattern in english. you may have thought that haiku was supposed to be 5-7-5, so what's up with the logo by the gravitational pull of celestial objects, can touch us in unexpected ways.