List the three Key points raised by the appearance of the Cambrian Fauna

option a is correct i.e.

explanation:

in context to the membrane of nerve impulse, the outer membrane of neuron is semi permeable that is only sodium ions can pass through the membrane i.e. smaller ions can pass through the membrane while larger ions cannot pass through it.

ucd e e. rr. t t t t t t. to

nucleus

would be most reasonable answer tbh

bru what tyep of qus is dis