thao.thu.thi.tran's+science+questions+><

= __Science: Questions. __ = The Azolla, Bugs and Raupo.
 * Which organisms are produces? **

**Identify all consumers as either first, second or third order: **
 * First Order of Consumers: ** Dragonfly Nymph, Frogs.
 * Second Order of Consumers:** Water Rat, Swamp Wallaby.
 * Third Order of Consumers:** Brown Falcon, Cockatoo.

In our [wetland] ecosystem, there is the Brown Falcon, Frogs and Water Rat, which are also known as a Rakali.
 *  Which organisms are predators? **

** Which organisms are preys? ** The Brown Falcon, Cockatoo, Frogs, Swamp Wallabies and Water Rat are the preys in our ecosystem.

** Which organisms are competing for the same food? ** The list below are pairs of competitors.  ** What would happen to the producer/s if the number of first-order consumers? **
 * 1)** Frogs and Dragonfly Nymph.
 * 2)** Cockatoos and Swamp Wallabies.
 * 3)** Brown Falcon and Water Rat.
 * i) Increases:** the producer eventually becomes extinct or else decreases.
 * ii) Decreases:** the consumers would get even bigger in numbers leading to a whole change in the food chain.

The consumers above would become extinct as the first order will increase.
 * What would happen to the ecosystem if the second-order consumers become extinct? **

**What are some of the decomposers in your ecosystem? ** There are the Fungi and Algae in our [wetland] ecosystem.

Animal/Consumer:** Frog. **Increase** – When the species of frogs were to have their population increased, then the consumers who rely on the species will also increase.
 * Choose one of your consumers and predict what would happen if the population changed.
 * Decreases** – When the species of frogs were to decrease, and then the consumers who relied on them would simply change its food chain.

** What is an Introduced Species? ** It is when a species had been brought into the county from another country from another country. (eg. Rabbits were introduced into Australia, but because there was a large number of them, they were hunted down and killed to reduce the numbers). When using species - which are usually the predators - to get rid of pest (eg. A mouse is known to be a pest and a prey of a cat's).
 * What is a biological control?**