cultivated crops and farm animals bred, people define themselves. Texas is the second largest state in the USA.
Texas is Industrial and agricultural leader in the U. S. A. The main part of the Texas Land is used for agricultural production.
Plant breeding is a leader of the agrarian complex. Two thirds of the total area is occupied by the Texas grain crops, the main crop is wheat. Texas national culture are: corn and cotton.
2. Elements of the structure of agro-ecosystems managed by human, the explanation of a teacher using elements of the conversation and illustration 67, 33 of the textbook.
3. Resource, biological, economic and environmental constraints, the discussion of the "Agro-ecosystems" presentation.
Assignment: in the given list find and underline the names of producers, consumers, decomposers with different colours. (fern, an ant, white fungus, chemosynthetic bacteria, dragonflies, and earthworm).
1. Soil fertility preservation. The teachers narration with demonstration tables "Protection of soil from erosion," "Human influence on the inhabitants of the soil". Viewing the movie "agrocenosis and agro-ecosystems. Electronic means of educational publications "Ecology" LLC, "Bustard JSC" 1 C ". )
Fill in the table, using this list below:
Artificial System
Natural System
Taiga, a pond, a lake, an alpine meadow, a field, a coral island, a park.
- Fill in the table, "Similarities and differences between natural ecosystems and agro-ecosystems" on the board.
Ecosystem
Similarity
Difference
Natural phototrophic
Agro-ecosystem
Compare the ecosystem meadows and
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