Definite article is used before a noun (person place or thing) to indicate that the identity of the noun is known to the reader.
indefinite article is used before a noun that is general or when its identity is not known.
Answer:
- Erosion and deposition (shoreline retreat)
Explanation:
Sand moves along a shoreline through hydraulic and mechanical action (friction) of the waves. During this course, two phenomenons usually occur, i.e. erosion followed by deposition.
However, sometimes when the wave action is stronger, it leads to the coastal erosion or the shoreline retreat where a land part is permanently lost and the sand is moved with the waves forming beaches.
It is between A and B.
But if the species is going to be extinct, that means that they are being threatened.
So the answer is B.
Following are the definitions matched with the words given
Explanation:
Social behavior
having a complex social structure marked by role specializations.
Hydrodynamic :
related to movement of fluids or related to objects moving in fluids.
Forage :
to forage is to search for and collect food.
Migrate :
to move from one location to another seasonally.
Eusocial :
the interaction between two or more members of the same species.<u> These interactions are highly ritualized and follow the same pattern every time.</u>
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