Approximately 69% of earth's water is in the form of glacial ice.
Global climate change, tectonic activity, asteroid impacts, and large
volcanic eruptions are all factors that have led to Loss in the fossil record.
Climate change is the modification in the earth climate as a results of
humans and other interaction with the earth.
Climate change causes damages to earth morphology and indirectly
causes loss of fossil records.
Tectonic activity such as earth quakes and volcanic eruption are mostly
due to the interaction of earth lithospheric plates. This plates either diverge
or converge and causes modification of the earth lithosphere. This
modification causes loss of fossil record.
Asteroid are rocky object in the exosphere that cause massive impact in
the earth when they hit it. This event that destroys the earth causes loss in
fossil record.
Volcanic eruptions is when lava(semi liquid) and gas are released through
a volcano to the earth surface. They cause massive destruction to the earth
and invariably cause loss of fossil records.
learn more: brainly.com/question/12929978?referrer=searchResults
I assume that the question refers to the political affiliation of the Islands (They are Islands in the Mariana Trench, in the Pacific Ocean, south of Japan) - they are politically linked to the US - the correct answer is a). For example the Mariana islands have a commonwealth status within the US.
Let's start from the beginning.
<span>Millions and millions of years ago, planet Earth was absolutely crowded with volcanoes. </span>
<span>As you may know, volcanoes release steam and gasses. </span>
<span>As the years went by, the gasses released from volcanoes formed the atmosphere around the planet, which prevented the steam from disappearing into outer space. </span>
<span>The steam eventually, in cycles, began to fall back to Earth. Viola, rain had just been "invented". </span>
<span>As more and more rain fell, considering almost every surface of the planet was volcanic, the water began to build up and "flood" the planet. Many active volcanoes had now been transformed into underwater volcanoes. </span>
<span>As more and more years went by, eventually, bacteria in the water slowly began to evolve, first into jelly-fish like creatures, then tadpole-like creatures, leading all the way up to large ferocious underwater reptiles, amphibians and fish. </span>
<span>As the planet started to warm up, probably by methane gasses released from the prehistoric underwater creatures, the water levels on Earth began to drop again. At the same time, the active underwater volcanoes were creating new landmasses, either by lava cooling on the surface of the water or tectonic plates pushing the volcano above sea level. </span>
<span>So, this, is how fossils of sea creatures ended up in high land-based mountains. </span>
<span>Because millions of years ago, most of Earth was underwater until the water levels dropped or lands "grew" higher. </span>
<span>The Rocky Mountains were once underwater. </span>
<span>If you take a look at images of the Grand Canyon in the United States, you'll see that it resembles the deep caverns and canyons that you find at the bottom of oceans. </span>
<span>That's because the Grand Canyon WAS at the bottom of an ocean.</span>
plate boundary can produce volcanoes
