Answer:
neurons are able to communicate through electrical impulses for example when a stimulus is detected the receptor cells transfer electrical impulses to the sensory neurons which is passed onto the relay neurons in the central nervous system and relayed to the motor neurons. the motor neurons travel with the electrical impulses which are transferred to the effectors to cause a response. However neurons travel and commu icate through synapses
Answer: As a result of more people being vaccinated the spread of the infection slowed down.
'Which food did dinosaurs compete for?' would be impossible to test through observation. The last option.
<h3>What are observations?</h3>
Observation is a process of obtaining information about phenomena using any of the five senses. In other words, observations are a way of obtaining data for scientific purposes.
Why is the question about dinosaurs' food unanswerable by observations? This is basically because dinosaurs can no longer be observed in this our present world.
Dinosaurs are believed to have gone into extinction about 65 million years ago during the Cretaceous period. Thus, unless one can go back in time, there is no way to answer the question of which foods did dinosaurs compete for through observations.
More on observations can be found here: brainly.com/question/28041973
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<span> C - This process is called natural selection. In a species, only the strongest ones survive and then go on to produce offspring and evolve. Having a certain fur colour could act as camouflage for the mice in the wild.
hope this helps.</span>