Adults spend about 20% of their time asleep in rem sleep. Hope this helped, have a great day! :D
Answer: Herring
Explanation: Sorry if Im wrong
Answer:
Population density of horse
Explanation:
Population density refers to the number of people (or any other living species) existing in a particular area. This reflects the quantity of a particular type of living species that exist over an area of about 1 km².
Population density is obtained mathematically by, dividing the total population of the area by the total size of the area.
In the given question, it describes the quantity (number) of wild horses that are present per square kilometer in the prairie lands. This refers to the population density of horses.
The crust. because that is where the sun and clouds are.