Can changes in climate be attributed to natural factors?

Here, land degradation due to natural and cultural factors is widespread.

Until the 20th century, they found, a variety of mostly natural factors combined to influence the climate.

There are other natural or manmade factors affecting its continued existence.

But the second study cautions that other, natural factors could stall further warming.

The situation on the planet was complicated by natural factors, making the problem much more complex than she'd first anticipated.

Meander formation is a result of natural factors and processes.

Landscape photos taken in the same place but many years apart reveal dramatic changes due to human and natural factors.

Despite these measures, the conservation of Ambohimanga is challenged by human and natural factors.