Answer by Diane Eager To answer this question we need to consider what makes a cow produce milk in the first place. Like all mammals, cows produce milk to feed their babies. Therefore, the first time a cow will produce milk is when she has a calf. After that she will continue to produce milk […]
CARROT EVOLUTION? Farmers have changed purple carrots to orange ones. Isn’t this evolution?
What change has really happened to carrots?