A male is born colorblind what do we know about his mother

What is the difference between bacterial infections and viral infections?

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?

Which characteristics are typical of a human population in the postindustrial stage?