The food web

I. In the picture on this page, can you identify:

- the largest source of energy

- the primary consumer

- the herbivore

- the producer?

II. Answer the following questions:

1. What do the arrows mean?

2. How is the mountain lion different from the squirrel or the rabbit? What does the mountain lion eat? What the squirrel and the rabbit eat?

3. What happens if all the mice in this ecosystem die? Will the animals dependent upon them for food die also?

4. What type of ecosystem is this? Is this a forest ecosystem or a desert one?

III. Read and translate the given text:

Ecology is the study of the interaction of living and nonliving things. Ecologists are concerned with the biosphere, which is where life exists. Within this biosphere, there are ecosystems, which are communities of organisms in a given area that interact with their nonliving environment.

Currently the world is facing many environmental problems, which are caused by population growth, abuse of natural resources, and pollution. It is important to understand ecology so we can begin to solve these global issues.

First of all it is necessary to look at the structure of an ecosystem and how an ecosystem functions or works.

Then it is important to learn how to describe the structure of an ecosystem, state the abiotic components of an ecosystem, understand basic chemical elements and formulae, understand the concepts of energy and matter, describe how various physical factors affect the distribution of living things, describe a typical food chain, explain how energy flows through an ecosystem, explain how materials cycle in an ecosystem.

Дата добавления: 2014-11-20