It's A) I believe. Petroleum coal and natural gas are all fossil fuels except copper
Experimental design refers to how participants are allocated to the different groups in an experiment. Types of design include repeated measures, independent groups, and matched pairs designs.
Answer:
The cell wall is part of plant eukaryotes and prokaryotes.
The proprioceptors are the sensors in the limbs, which give information regarding the muscle length, joint angle, and muscle tension that is combined to provide knowledge regarding the alignment of the limb in space. The muscle spindle is one of the kinds of proprioceptor, which gives information regarding the changes in the length of the muscle.
On the other hand, a nociceptor refers to a sensory neuron, which reacts towards the potentially damaging or destructing stimuli by conducting probable danger signals towards the brain and the spinal cord.
Proprioceptors are to reflex actions as nociceptors are to pain perception.
