According to Darwin’s theory of evolution, in which order do the steps of natural selection happen? Some members of a population survive and reproduce, their environment or location changes, and favorable traits are passed on to offspring. A population’s environment or location changes, some members survive and reproduce, and favorable traits are passed on to offspring. Favorable traits are passed on to offspring in a population, some members survive and reproduce, and the environment or location changes. Some members of a population survive and reproduce, favorable traits are passed on to offspring, and their environment or location changes.

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-