It’s natural LOL , it can’t be man - made . It depends where you live it though .
Answer:
"Alfred Wegener suggested that continental drift occurred as continents cut through the ocean floor, in the same way as this icebreaker plows through sea ice. ... The supercontinent later broke apart and the continents having been moving into their current positions ever since. He called his hypothesis continental drift."
Ans.
A nerve is defined as a bundle of axons. Axons are slender, long projections protruded from neurons in PNS (peripheral nervous system). The nerves provide a pathway for the transmission of electrochemical nerve impulses from axons to the other peripheral body organs.
Thus, the correct option to be fill in the blank is 'bundle of axons.'
The answer is Denitrification.
Denitrification is the reduction of nitrates back into the largely inert nitrogen gas (N2), completing the nitrogen cycle. This process is performed by bacterial species such as Pseudomonas and Clostridium in anaerobic conditions.
