NATURAL SCIENCE EXAM

NATURAL EXAM

1. Une:

Population all the plants and animals in an ecosystem.

Community all the non-living things in an ecosystem.

Biotope a group of animals of the same species that live together.

Biocoenosis a group of differents sepecies that live in the same ecosystem.

Habitats are ecosystems with several types of habitats.

Biomes are places wher individual populations live.

2. Completa:

- The..................... have an ........................ relatiónship because the family members belong to ......... species.

-- The..................... have an ........................ relatiónship because each animal belongs to ......... species.

3. Define:

Ecosystem, extinct, biosphere, producers, primary consumer, secondary consumers, tertiary consumer and descomposers.

4. Pon un ejemplo de food changes y pon los nombres de cada uno de ellos, y quién come a qué. Responde. What does it feed on? A.............. feeds on.........     What is it eaten by? A......... is eaten by................

5. Clasify these organisms in producers, descomposers o primary, secundary o tertiary consumer.: owl, grass, snake, bacteria, rabbit, grasshopper, worm, toad, elephant, tree, eagle.

6.  What living things and non-living things can found in pond ecosystem? And in woodland ecosystem? And in a prairie? And in a coast?

7.  Describe how can changes ecosystem especialy the four types affect human activities.