Ecological Footprint is the amount of resources needed by a single individual to survive. Scientists have calculated the current human population’s ecological footprint as equal to 1.5 Earths. So how does that affect the sustainability of the earth? Find out through this video! #Unacademy #Education | Unacademy

The Eurasian siskin is a small, lively finch found across Europe and parts of Asia. With slender bills built for seed eating, siskins feed on alder, birch and pine cones, often hanging upside down to reach hidden seeds. In spring, they switch to insects for extra protein to feed their chicks. Traveling in flocks, these finches help spread plant seeds across forests and parks — tiny birds with a big ecological footprint. #eurasiansiskin #finchfacts #forestbirds #seedspreaders #natureeducation | G