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12 ужинов в подарок. Закажи Grow Food сейчас и не плати за ужины.

Ecology Terms and Feeding Relationships/Biology /iGCSE Ecology and the Environment/Crick's Biology

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This lesson is on:
The organism in the environment and feeding relationships
(a) The organism in the environment
4.1 understand the terms population, community, habitat and ecosystem
4.3B understand the term biodiversity
4.5 understand how abiotic and biotic factors affect the population size and distribution of organisms

(b) Feeding relationships
4.6 understand the names given to different trophic levels, including producers, primary, secondary and tertiary consumers and decomposers
4.7 understand the concepts of food chains, food webs, pyramids of number, pyramids of biomass and pyramids of energy transfer
4.8 understand the transfer of substances and energy along a food chain
4.9 understand why only about 10% of energy is transferred from one trophic level to the next

I am Head of Biology with 25 years of teaching experience. I am learning technology as I go along, through 'lockdown' due to Covid-19. I never thought I would end up doing YouTube videos, but seeming as I am recording lessons, as well as doing live lessons with my pupils, I thought I should try putting them onto YouTube to see if they could help other pupils and teachers too.

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