Sentences with phrase «percent of its earth»

It's estimated that roughly 99 percent of Earth's land ice is stored in the ice sheets that cover Antarctica and Greenland, so their health is something scientists — and the world — can no longer ignore.

More than 25 percent of Earth's available landmass and fresh water is used for raising livestock.

Most of the remaining 1 percent of the earth's water supply is found in underground aquifers which are recharged by rainwater seeping through the soil.

Much of the population growth will take place among the 80 percent of Earth's peoples who currently consume only 20 percent of Earth's resources.

Water makes up just 0.02 percent of Earth's mass; carbon just 0.003 percent.

There is a good reason for that: Although rainforests cover only 2 percent of the earth's surface, these ecological powerhouses are critical to nearly every aspect of the planet's health — including our very ability to breathe.

De Blasio announced last month that the city had filed a lawsuit against BP, Chevron, Conoco - Phillips, ExxonMobil and Royal Dutch Shell, claiming their fossil fuels produce 11 percent of the Earth's global - warming gases.

The freshwater bodies on 38 percent of Earth's land area (not including Antarctica) are overly enriched with phosphorus, leading to potentially toxic algal blooms and less available drinking water, researchers report January 24 in Water Resources Research.

In comparison, only 34 percent of Earth's land area is used for agriculture or grazing.

This is because almost 70 percent of Earth's surface is covered with water.

But because more than 40 percent of the Earth's population lives about 60 miles from the coastline, the authors write that taking advantage of offshore groundwater could help dampen looming water scarcity problems likely to be compounded by sea - level rise and drought.

Mountains cover about 27 percent of Earth's surface.

We use 40 percent of the earth's land right now in crops or agriculture.

Recent estimates indicate that just 1 percent of Earth's hydrate deposits could yield enough natural gas to meet American needs for 170,000 years at current rates.

Arid lands, which cover some 40 percent of Earth's terrestrial surface, are too dry to sustain much in the way of vegetation.

But the agency would lose about 9 percent of its earth science budget, slightly more than expected.

More than 99 percent of Earth's gold is missing — it all sank to the center of the planet billions of years ago.

And a November Nature study showed such rocks cover just 13 percent of Earth's surface.

The plume's more southern location, Toomey said, adds fuel to his group's findings, at three different sites along the globe encircling mid-ocean ridge (where 85 percent of Earth's volcanic activity occurs), that Earth's internal convection doesn't always adhere to modeling efforts and raises new questions about how ocean plates at Earth's surface — the lithosphere — interact with the hotter, more fluid asthenosphere that sits atop the mantle.

Only a thousand protected areas existed in 1962, representing 3 percent of the earth's surface.

Such afforested areas account for only 4 percent of Earth's forests, but they already supply 35 percent of the world's wood products, according to the United Nations's Food and Agriculture Organization.

Kaiho clarified the relationship between the findings and concluded that the significant cooling and mass - extinction event could have only have occurred if the asteroid had hit hydrocarbon - rich areas occupying approximately 13 percent of Earth's surface.

«This is huge because 70 percent of Earth's surface is covered by water and we've largely been blind to it — until now.

At any given time, clouds cover about 70 percent of the Earth's surface and together produce a net cooling effect on the planet.

This is because the catastrophic chain of events could only have occurred if the asteroid had hit the hydrocarbon - rich areas occupying approximately 13 percent of Earth's surface.

Part of the global mid-ocean ridge system that encircles the planet, these regions generate 70 percent of Earth's tectonic plates.

«Despite the fact that the moon is only about 1 percent of the Earth's mass,» Weiss says, «this tiny little thing seemed to have generated whopping magnetic fields lasting for an extremely long time — longer than you might think would be possible.»

Even though water covers 70 percent of Earth's surface, it makes up a very small fraction of the planet's overall bulk.

Although 75 percent of the planet is an ocean of blue, the remaining 25 percent of Earth's surface is a dynamic green.

But they're also a key part of the carbon cycle: Although wetlands cover only about 3 percent of Earth's surface, they account for as much as 30 percent of soil carbon storage.

At 1 percent of Earth's mass, the moon would have cooled too quickly to generate a long - lived roiling interior.

About 85 percent of Earth's ice - free lands is covered by vegetation.

Since grasslands cover 30 to 40 percent of Earth's land area, Reich says it's important to learn how they could store carbon in the future.

Because Mars» atmospheric pressure at ground level is comparable to that of Earth's atmosphere at 100,000 feet — a mere 1.4 percent of Earth's air pressure at sea level — an aircraft that can fly in such conditions will help engineers learn how to design aircraft to roam Martian skies.

The area covered by all the green leaves on Earth is equal to, on average, 32 percent of Earth's total surface area — oceans, lands and permanent ice sheets combined.

Alaska composes about one percent of Earth's total land area, and its estimated annual emissions in 2012 equaled about one percent of total global methane emissions.

The 1,100 - pound (500 kilogram) meteorite is an ordinary H5 chondrite, a type of stony meteorite responsible for 31 percent of Earth's impacts.

Today, some 20 percent of Earth's atmosphere is free molecular oxygen, or O2.

While researchers estimate accretion during late bombardment contributed less than one percent of Earth's present - day mass, giant asteroid impacts still had a profound effect on the geological evolution of early Earth.

«Moreover, high - altitude balloons above 95 percent of the Earth's atmosphere allow for observations in the ultraviolet - and infrared - wavelength bands, which aren't possible with ground - based telescopes.

This is good news: Drylands cover almost 42 percent of Earth's land surface, and climate change could expand the parched zones by 11 to 23 percent by 2100.

The total mass of the Asteroid belt is estimated to be 3.0 to 3.6 × 1021 kilograms, which is 4 percent of the Earth's Moon.

Even though nitrogen gas makes up approximately 80 percent of Earth's atmosphere, the plant can only access it in a bound — or «fixed» — form.

In a massive extinction about 250 million years ago, 90 percent of Earth's sea creatures and up to 80 percent of its terrestrial species vanished.

«Up to ten percent of the Earth's crustal phosphate may have originated from schreibersite, so the mineral was abundant and readily available to engage in early chemical reactions,» said Pasek.

About 75 percent of the Earth's surface is covered in water, which makes an ocean splashdown likely, NASA and experts have said.

An ever - expanding network of roads, railways, rivers, and shipping lanes means that only 10 percent of the earth's surface is now remote, defined as being at least 48 hours away from a major city.

The deep ocean, which covers more than 60 percent of Earth's surface, is a biodiversity hotspot at increased risk from climate change.

Although wetlands comprise 5 to 8 percent of the planet's land surface, they're holding up to 30 percent of Earth's stored carbon.

The mantle — which makes up more than 80 percent of the Earth's volume — is made of silicate minerals containing iron, aluminum, and calcium among others.