The diagram above illustrates the digestive tract of a farm animal. Digestion of protein starts in the part labelled

In the diagram illustrated above, fertilization takes place in the part labelled

In the diagram illustrated above, chalaza is formed in the part labeled

A farmer observed that all his day-old chicks clustered around the source of heat in a brooder house. This observation is likely due to

Which of the following practices ensures that a young animal has resistance against diseases?