YDS

Wetlands act as natural filters, removing pollutants from water as it passes through. Plants and soil within wetlands trap sediment and absorb excess nutrients. These ecosystems also provide critical ...
https://e-sorucoz.com/test-sorular/YDS-Okuma-Sorulari-Test-4-1.soru


Permafrost is ground that remains frozen for at least two consecutive years. Large areas of the Arctic are covered by this frozen layer. As global temperatures rise, permafrost has begun thawing at an...
https://e-sorucoz.com/test-sorular/YDS-Okuma-Sorulari-Test-4-2.soru


Coral reefs, though covering less than one percent of the ocean floor, support roughly a quarter of marine species. Rising sea temperatures can cause coral to expel the algae living within their tissu...
https://e-sorucoz.com/test-sorular/YDS-Okuma-Sorulari-Test-4-3.soru


Migratory birds rely on an internal sense of direction to travel vast distances each year. Some species appear to use the Earth's magnetic field for navigation. Others may rely on the position of the ...
https://e-sorucoz.com/test-sorular/YDS-Okuma-Sorulari-Test-4-4.soru


Invasive species can quickly overwhelm ecosystems that lack natural predators to control them. They often outcompete native species for food, space, and other resources. Some invasive species arrive a...
https://e-sorucoz.com/test-sorular/YDS-Okuma-Sorulari-Test-4-5.soru


Old-growth forests contain trees that have grown undisturbed for centuries. These ecosystems typically host greater biodiversity than younger, managed forests. Their dense canopies and complex root sy...
https://e-sorucoz.com/test-sorular/YDS-Okuma-Sorulari-Test-4-6.soru


Freshwater ecosystems supply drinking water to billions of people worldwide. Pollution from agriculture and industry increasingly threatens these vital water sources. Excess nutrients can trigger alga...
https://e-sorucoz.com/test-sorular/YDS-Okuma-Sorulari-Test-4-7.soru


Elephants are considered a keystone species within African savanna ecosystems. By uprooting trees, they help maintain the open grasslands that other species depend on. Their seasonal migrations also d...
https://e-sorucoz.com/test-sorular/YDS-Okuma-Sorulari-Test-4-8.soru


Ocean currents distribute heat around the globe, influencing regional climates significantly. The Gulf Stream, for example, carries warm water from the tropics toward Europe. This current helps keep p...
https://e-sorucoz.com/test-sorular/YDS-Okuma-Sorulari-Test-4-9.soru


Bees pollinate a significant proportion of the crops humans depend on for food. Pesticide exposure has been linked to declining bee populations in several regions. Habitat loss also reduces the availa...
https://e-sorucoz.com/test-sorular/YDS-Okuma-Sorulari-Test-4-10.soru