Презентация на тему: The relationship of living things and their environment

The relationship of living thingsand their environment

What ecologists study

How ecology studies

Why men study ecology ?

The balance of nature

The balance of nature Water cycle

The balance of nature Carbon dioxide cycle

The balance of nature Nitrogen cycle

The balance of nature Energy cycle

The balance of nature Food chain

The balance of nature Marine food chain

Organisms that live together

Relationships helpful to one organism

Relationships helpful to both organism

Нанесение экономического ущерба в морских экосистемах. Загрязнение морской среды вследствие вторжения человека в баланс природы

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