Why was natural selection an important contribution to the theory of evolution?

Hedgerows have created a new ecosystem within britain’s a. farms b. cities c. forests d. industrial areas

What is the process of pulling apart an n2 molecule nevermind i got it

As scientists have investigated evolution from a variety of fields, they have found that some of darwin's orginal ideas were inaccurate or incomplete. t explanation provided by evolution was updated each time to reflect the new information they found. what does this suggest about the theory of evolution? it has become a stronger and clearer theory as new information is collected.