Answer:
b
b
c
b
Explanation:
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You didn't provide us with any statements regarding animal blubber but the reason why mammals that live in the arctic ocean have it is because it helps and keeps them 'warm' - it's a strong insulating factor.
Answer:
The presynaptic membrane is formed by the part of the presynaptic axon terminal forming the synapse and that of the postsynaptic neuron is called the postsynaptic membrane. The space between the presynaptic and postsynaptic membrane is called the synaptic cleft. These three structures together form the synapse.
Explanation: