Match each term to its description. Match Term Definition
Replacement-level fertility A) any limiting factor that is not affected by the number of individuals in a population
Density-independent factors B) a method to estimate how many years a variable will double given its growth rate
Density-dependent factors C) any limiting factor that is affected by the number of individuals in a population
Rule of 70 D) the number of children required to be born to offset deaths in a population

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.

wegner's theory did not explain how the continents could move

explanation:

oxygen is the first element in group 16 (via) of the periodic table. the periodic table is a chart that shows how chemical elements are related to each other. the elements in group 16 are said to belong to the chalcogen family. other elements in this group include  sulfur, selenium, tellurium,  and  polonium.  the name chalcogen comes from the greek word  chalkos,  meaning "ore." the first two members of the family, oxygen and sulfur, are found in most ores.

oxygen is by far the most abundant element in the earth's crust. nearly half of all the atoms in the earth are oxygen atoms. oxygen also makes up about one-fifth of the earth's atmosphere. nearly 90 percent of the weight of the oceans is due to oxygen. in addition, oxygen is thought to be the third most abundant element in the universe and in the solar system.