Sentences with phrase «by human activity»

Climate models show that the additional particles caused by human activity produce a cooling effect which partially offsets the greenhouse effect.

While all eyes were turned on carbon dioxide, almost by chance a few researchers discovered that other gases emitted by human activity have a greenhouse effect strong enough to add to global warming.

Despite attempts to locate monitoring sites in places not affected by human activities, the stations are picking up signals of human influence throughout the Caribbean basin.

Climate change is driven by human activities such as burning fossil fuels, which release carbon dioxide into the air, causing global warming.

But these days, with many scientists are focused on tracking greenhouse gases produced by human activities at national, regional and local scales, the current monitoring network doesn't measure up.

Also, the ocean contributes in generating food and oxygen for human being and fighting against climate change by absorbing 93 percent of the carbon dioxide released by human activities.

Likewise, only 15 percent correctly understand that the great majority of climate scientists think that global warming is caused mostly by human activities, while 32 percent say they don't know.

Climate change is occurring, is caused largely by human activities, and poses significant risks for — and in many cases is already affecting — a broad range of human and natural systems.

In recent years, there has been a significant loss in biodiversity, caused primarily by human activity.

That's about 2.3 percent of all the CO2 generated by human activity in the world.

But in a broader sense, it can simply mean organisms whose genomes have been influenced by human activities — and that includes all food that comes from farms.

Such an installation examines our behaviour towards the environment — especially to creatures whose habitat is threatened by human activity.

In fact, in a world that has been dramatically altered by human activity, many could be important allies in rebuilding healthy ecosystems.

The largest emissions should occur in tropical areas disturbed by human activities.

And a large body of evidence shows that all those changes may be linked to the greenhouse gases created by human activity, which are accumulating in our atmosphere.

When carbon is emitted by human activities into the atmosphere it is generally thought that about half remains in the atmosphere and the remainder is stored in the oceans and on land.

The biggest factor is the increase in CO2 concentration as well as a few other greenhouse gases, also added by human activities.

The team used this ratio as a benchmark to identify and compare levels of mercury pollution caused by human activities across water samples from different oceans.

Black carbon comes from natural sources like forest fires and is also driven by human activities like the production or burning of fossil fuels, biofuels and biomass.

With the global population now well over seven billion there are few remaining parts of the world relatively untouched by human activity.

But if CO2 is increased by human activity then it will contribute to warming.

They are all interconnected and all of them have been disrupted by human activity in the twentieth century.

Although it is released by human activities through the combustion of fossil fuels, it is also formed by certain natural processes (see carbon cycle).

This is also the region that has been the least touched by human activities.

The researchers argue that these intact areas deserve higher priority for limited conservation dollars than areas already impacted heavily by human activity even though species are also threatened in the impacted areas.

In this exhibition, she explores a full spectrum of sites and calls attention to places affected by human activity with over 60 paintings and drawings on display.

Their accumulation in the atmosphere can only be explained by human activity.

One in every 30 tonnes of CO2 generated by human activity today comes from a ship.

The additional supply of nitrogen into the world's oceans by human activities, however, could change this situation in the future.

Global Warming, caused by human activity may very well be happening, but there is a chance that it is not.

Whether we acknowledge the scientific consensus, demonstrated in thousands of studies over decades, climate change is both real and promoted by human activities.

The study comes with broad implications for a world shattered by human activities.

It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.

Lately, he's focused closely on carbon dioxide, developing a variety of ways to visualize the roughly 80 million tons of the greenhouse gas emitted daily by human activities.

This is the drop in seawater pH as the oceans absorb an estimated 22 million tons of carbon dioxide from the 80 million tons emitted each day by human activities.

He wants to know, please tell us what percentage of carbon dioxide is caused by human activity relative to other sources of carbon dioxide.

Here we restrict ourselves to tipping elements that may be accessed by human activities and are potentially relevant to current policy.

The percentage of those that believe it is caused mostly by human activities has declined from 57 % to 47 %.

They are therefore not directly affected by human activity (although they are affected indirectly through an important feedback mechanism).