President Donald Trump speaks before signing the National Defense Authorization Act, on December 12th, 2017, in Washington, D.C. (Photo: Mark Wilson/Getty Images)

Over 100 bipartisan members of the House of Representatives urged President Donald Trump to reconsider the omission of climate change as a national security threat in his 2018 National Defense Authorization Act. In the letter, sent on Thursday, the members called Trump's omission "a significant step backwards" in recognizing the "geopolitical threat" of climate change.

The Trump administration's stance marks a significant divergence from the Obama White House, which created a Climate Action Plan in an effort to curb rising emissions levels in 2013. Evidence continues to mount that climate change not only exists, but is having a detrimental effect on public health, the environment, and world economies.

In their letter, the House members wrote that fluctuating and erratic temperatures have affected communities worldwide, along with eroding beaches and pieces of land chipped away by rising sea levels. "Landscape military installations and our communities are increasingly at risk of devastation," they wrote. "Climate change is indeed a direct threat to America's national security and to the stability of the world at large."

With the Trump administration ushering in an era of climate skepticism (and in some cases climate denial), the White House has significantly loosened policies and legislation addressing the environmental impact of climate change, leaving citizens and communities even more vulnerable to the inevitable consequences of pollution.

Here are just a few ramifications and growing potential climate-change threats already on their way:

The effects of climate change are not myths. In fact, the consequences of climate change are already in motion.