A headline on a news website stated “Sheep with a varied diet grew faster and produced less pollutants, new study finds.” The article reports that scientists using pregnant sheep that were twin-bearing to test how diet affected the lambs. When the twin lambs were born, one lamb was put on a typical rye grass diet, while the other was given a variety of feeds, including chicory, plantain, red clover and lucerne. The impact was huge, with the lambs given a variety of feeds seeing a 100 per cent increase in growth, excreted less nitrogen into the environment and had an improved well-being. (i) Is the study reported on an experiment or an observational study? Explain your answer in one or two sentences.
A headline on a news website stated “Sheep with a varied diet grew faster and produced less pollutants, new study finds.” The article reports that scientists using pregnant sheep that were twin-bearing to test how diet affected the lambs. When the twin lambs were born, one lamb was put on a typical rye grass diet, while the other was given a variety of feeds, including chicory, plantain, red clover and lucerne. The impact was huge, with the lambs given a variety of feeds seeing a 100 per cent increase in growth, excreted less nitrogen into the environment and had an improved well-being.
(i) Is the study reported on an experiment or an observational study? Explain your answer in one or two sentences.
Step by step
Solved in 2 steps with 1 images
