Answer:
After a fire
Explanation:
Primary succession is one of the two types of ecological succession in which a barren area of land (with no soil) is colonized by organisms called PIONEER SPECIES for the very first time.
Primary succession is characterized by a BARREN area that had no form of previous growth or colonization. These barren area can include a retreating glacier, an emerging islands or the formation of new lakes.
Note that, the succession that occurs AFTER A FIRE or any form of environmental disturbance is SECONDARY SUCCESSION.
Answer:
Dendrite, cell body and axon are the body parts of neuron. Dendrites recieves impulses from other neuron and pass this impulse to the cell body. From cell body, the nerve impulse pass to the axon and from here it is send to the connected neuron.
Neurons are basic structural and functional unit of nervous system. Neurons are responsible for the transportation of impulses from organs to nervous system and carry instructions from nervous system to the organs.