An impulse relayed along a myelinated axon jumps from node of Ranvier to node of Ranvier.
Answer:
C. a chemical treatment.
Explanation:
In this case we would be talking about a chemical treatment, since the application of an artificial compound is made, and it is not clarified that it was "ecofriendly".
On the other hand, the question clarifies that the farmer is suffering from the plague. This indicates that he is not preventing it (Integrated pest management), he is treating it.
Finally, it should not be considered as an agronomic treatment, since no real modifications are being made to the way the field is managed.
Answer:
An organism that can provide itself with natural and nutritional substances from non-natural substances.
Example ↓
The potted plant in that window across the street.
Plankton.
Bacteria.
It is the though outer layer/wall of spores and pollen grains. Kind of similar to a cell wall!
Hope that helps!
Scientists can examine sediment samples to get an idea of when major earthquakes occurred in the past. By measuring the amount of time between events, they can come up with a rough idea of when a major quake might hit.