Present a threat to mainstream media, largely because they

Blogs; are cheap to produce.

Explanation:

Blogs are a dangerous alternative to mainstream media. In a blog, the author performs many of the same actions that a large team at a media company produce, such as researching, writing, recording, editing, publishing, advertising, etc. Moreover, blogs are usually very cheap to produce, and as they require very little investment, can often be very profitable.

another answer from our community: let us first explain the meaning of "eternal truth" which is tomean, continuing forever or indefinitely. this being the case itcannot be changed, for truth is truth no matter what changes aremade to the structure of its explanation. however, as for religeons changin… (more)

answer; i believe its jutland peninsula and scandinavian peninsula;