Correct option is D
In 1956, Francis Evans was the one who mentioned the ecosystem as "the basic unit in ecology." His work helped lay the foundation for understanding ecosystems in a more systematic and structured way.
- His work helped in understanding the complex interactions between living organisms (biotic factors) and their environment (abiotic factors).
- Ecosystems can vary in size and function, ranging from small ponds to large forests, and they are central to ecological processes like nutrient cycling, energy flow, and ecological succession.
- The study of ecosystems involves the energy flow through food chains and webs, as well as the cycling of materials like carbon, nitrogen, and water.
Additional Knowledge:
- John Harper: Harper is known for his work on population ecology and the concept of the individualistic hypothesis in the distribution of plant communities.
- Rachel Carson: Famous for her influential book "Silent Spring", which raised awareness about the dangers of pesticide use and its impact on ecosystems.
- Aldo Leopold: Known for his land ethic and the idea of considering humans as part of nature, advocating for a broader ecological perspective.
