Plz help ASAP THANKS :)))

(1)The number of members of a population living in a specific area, such as a square kilometer is known as the:

A . Carrying capacity.

B: population profile

C: population density

D: limiting factor

(2) A certain kind of plant cannot survive of the temperature drops below freezing. For this plant temperature is:

A. A biotic factor

B: a symbiotic relationship

C: a non-renewable resource

D: a limiting factor

The number of members of a population living in a specific area, such as a square kilometer is known as the:C population density  

Explanation:It is C because population density is the measurement of  population per unit area or by unit volume I hope this helps

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question