Man vs beast: Who is more efficient 6 Minute English

Humans are considered the superior species on Earth, but are our bodies as efficient as the bodies of other animals Sam and Roy talk about this topic and teach you related vocabulary. This week s question Efficiency involves an input and an output. Its about the relationship between the amount of energy coming in in other words, the food we eat and the amount of the energy going out the usual movements and activities of daytoday life. So, according to this definition, which animal is the most efficient a) an ant b) a whale c) a human Listen to the programme to find out the answer. Vocabulary crouched bent at the knees, closer to the ground and leaning forward slightly dogleg having a bent shape, like a dogs leg; a sharp bend in a road or path optimal age best age; age at which you are most likely to succeed in an activity drops off decreases in amount or quality sweet spot best possible combination of factors or circu