Aweakened immune system may be caused by what?

When species lose their habitats they may..

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation

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.