Answer:
D.
Explanation:
the term natural selection is how evolution takes place
Gases have no defined shape or volume.
Answer:
Synaptic cleft
Synaptic cleft may be defined as the space between two neuron and the gap between post synaptic and pre synaptic neuron. This is one of the component of synapse. The signals are transmitted in the form of chemical signal.
Synapse:
Synapse may be defined as the functional contact between two neurons and the gap between two consecutive neuron. This synapse consists of Presynaptic and postsynaptic membrane. The signals can be transmitted in form of electrical and chemical synapse.
Scientific law. For example, Law of Universal Gravitation.
