| A | B |
|---|
| What are two names that describe organisms that can make their own food? | Producers, Autotrophs, 
|
| What are two processes that autotrophs use to produce their own food? | Photosynthesis, Chemosynthesis,
|
| What do you call organisms that can produce their own food without light? | chemosynthesizers,
|
Most chemosynthesizers are _______.,  | bacteria |
| Autotrophs use either light energy or chemical energy to produce ___. | carbohydrates,
|
| During photosynthesis, light energy is used to convert _____ and _____ into ____ and _____. | carbon dioxide and water into carbohydrates and oxygen,
|
| Another word for consumer is ____. | heterotroph,
|
| What are two words to describe organisms that must rely on other organisms for their energy and food supply? | Consumers, Heterotrophs,
|
| What do you call organisms that feed only on plants? | Herbivores,
|
| What do you call organisms that only feed on other animals? | Carnivores,
|
| What do you call organisms that feed on both plants and animals? | Omnivores |
| What do you call organisms that get energy by breaking down organic matter left over from dead organisms? | Decomposers |
| Describe how energy in an ecosystem moves? | It moves in a one-way path, from the sun or inorganic compounds, to producers and then consumers. |
| Describe how matter moves in an ecosystem? | Matter cycles through an ecosystem, going from producers to the consumers who eat the producers and eventually to decomposers who change the matter into forms the producers can use, to start the cycle all over again. |
| True or false? "Matter is used up in an ecosystem." | False, it keeps cycling from one type of organism to another. |
| True or False? "Energy is used up in an ecosystem." | True, energy travels in a one way direction, and is eventually lost as heat from the different organisms as it travels up the food chain. |
| A series of steps in which organisms transfer energy by eating or being eaten is called a ___. | food chain |
| _______ show the one-way flow of energy through an ecosystem. | Food chains |
| Which way do arrows point in a food chain? | They point from the organism that is being eaten towards the organism that eats them. They show which way energy is being passed along in an ecosystem.,  |
| A ______ describes the complex feeding relationships among all organisms in an ecosystem, including the decomposers. | food web |
| The picture below depicts a ____., | food chain, |
The picture below depicts a ____.,  | food web, |
| What are the three basic methods that ecologists use to study the environment? | 1) observing 2) experimenting 3) mathematical models |
| Which of the three basic methods that ecologists use to study the environment involves the use of computer simulations? | mathematical models |
Which of the three basic methods that ecologists use to study the environment involves the use of flowcharts like the one below?,  | mathematical models, |
| Mathematical models use ____________ to show how one component in a system affects another. | equations |
| What is the major advantage of using mathematical models to study the environment? | They can be used to predict what will happen in the future. |
| What are some disadvantages of mathematically modeling relationships and populations in an ecosystem? | 1) require accurate data 2) make assumptions about the mathematical relationships between things in an ecosystem 3) Ecosystems are incredibly complex and hard to accurately model 4) It may take years of testing a model to see if it is predicting the future accurately |
A graph like the one shown below probably represents the populations of a ______.,  | predator and its prey,  |
