An ecosystem is made up of interconnected relationships of organisms that rely on one another for food and energy. This dependence can be described as a food chain or a food web.

Since the mid-1900s, humans have been exerting an ever-increasing impact on the global nitrogen cycle. Human activities, such as making fertilizers and burning fossil fuels, have significantly ...

Physical ecosystem engineering by organisms is the physical modification, maintenance, or creation of habitats. Ecological effects of engineers on many other species occur in virtually all ecosystems ...

GCSE Edexcel Biodiversity & the effect of human interaction on ecosystems - Edexcel Biodiversity and interdependence Biodiversity is a measure of how many different species live in an ecosystem ...

Ecosystem – An ecosystem is like a big community of living things (plants, animals, and other organisms) that interact with each other and their physical environment. Endangered species – An ...

A robust property of the model is the emergence of ecosystems that tend toward a state where nutrients are efficiently utilised and differentially recycled, with a correlated increase in total ...

As the largest living organism by mass, it provides an essential ecosystem for a variety of plant species and wildlife, including deer, foxes, birds, and pollinators.

Then humans came along. Within two hundred years, the giant moa—along with a host of their close cousins—were dead at our species’ hands. What did the world of the moa look like?

The multifarious relationships between ants and their associated organisms form one of the most intricate ecological networks in terrestrial ecosystems. Ants are not only formidable social insects ...

Human activity is leading to an international decline in the variety of plants and animals through extinction, as organisms not useful to human needs are killed off by ecosystem changes or over ...

Never before has a single species become the top predator on land and sea, and human dominance over the natural environment has caused shifts in world ecosystems unprecedented in the last 500 ...