One of the characteristics of living things is that they respond to external changes in their environment so that their internal environment stays as stable as possible. why must an organism do this

Embryos of different species look very similar, which shows that the organisms share a ancestor.

Liv sheldon given the balanced equation for an organic reaction: c2h2 + 2cl2 → c2h2cl4 this reaction is best classified as *

Give the set of reactants (including an alkyl halide and a nucleophile) that could be used to synthesize the following ether: draw the molecules on the canvas by choosing buttons from the tools (for bonds and charges), atoms, and templates toolbars, including charges where needed. ch3ch2och2ch2chch3 | ch3