This lesson explores the impact of biosecurity threats, and why they need to be identified and managed. Examples to include are cases of the bacterium PSA causing disease on kiwifruits, myrtle rust, and biological control...
Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and development. Certain chemicals though can halt growth, e.g. herbicides in plants, or affect normal physiological activities, e.g. alcohol. For more info, read this tutorial on the effects of chemicals on plants and animals...
The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides details of the different parts and functions of the respiratory system...
While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities of the unconscious mind. For more details, read this tutorial on sleep and dreams...
There are many environmental factors that arise due to the usage of water in one way or another and for every action that man does, there is a resultant effect on the ecosystem. In this tutorial, some scenarios where human action results in a response from the ecosystem, either physically or chemically, are described. ..
Meet some of New Zealand's unique fauna, including endemic insects, frogs, reptiles, birds, and mammals, and investigate why many have such distinctive features. You'll also find out about why there are so few native mammals and the impact of introduced pests on the unique natural ecosystems...
