Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..
This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..
This study guide tackles plant roots in greater detail. It delves into the development of plant roots, the root structur..
Meet some of New Zealand's unique fauna, including endemic insects, frogs, reptiles, birds, and mammals, and investigate..
It only takes one biological cell to create an organism. A single cell is able to keep itself functional through its 'mi..
The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..