Fossils can be used by examine their analogous structures...... give him Brainliest
This is likely a mutant mouse (as synaptic clefts are typically 10 to 20 nm wide). Given that neurotransmitters act over short distances, this mouse may demonstrate delayed responses to stimuli, or no responses at all.
That’s the answer
The smallest thing they study is cells, i think!
hoped this helped!!