Energy Transfer and Intensive Farming

The video discusses intensive farming, highlighting its efficiency in food production due to modern practices. It covers the advantages, such as increased food security and lower costs, and disadvantages, including environmental impact and animal welfare concerns. The video explains how intensive farming improves energy efficiency in food chains and addresses the use of chemicals like pesticides and fertilizers, which can harm the environment. It also touches on the impact of overfishing on aquatic ecosystems, urging viewers to consider the environmental effects of their food choices.

What is a key characteristic of intensive farming compared to extensive farming?

• Animals are not used at all.

• Animals are confined to small spaces.

• Animals are kept in large open spaces.

• Animals are allowed to roam freely.

Why has intensive farming become more prevalent in recent times?

• Advancements in technology unrelated to farming.

• Need to feed more people with limited land.

• Increase in available land.

• Decrease in human population.

Which of the following is an advantage of intensive farming?

• It increases the cost of food production.

• It reduces the need for natural habitats.

• It requires more labor.

• It allows for seasonal food production only.

What is a disadvantage of using fertilizers in intensive farming?

• They improve soil quality.

• They reduce plant growth.

• They are cost-effective.

• They cause eutrophication.

What is a consequence of systematic antibiotic use in intensive farming?

• No effect on bacteria.

• Improved animal health without side effects.

• Increase in antibiotic-resistant bacteria.

• Decrease in antibiotic-resistant bacteria.

How does intensive farming affect energy transfer in food chains?

• It reduces energy loss.

• It completely stops energy transfer.

• It increases energy loss.

• It has no effect on energy transfer.

What is one method used in intensive farming to reduce energy loss in animals?

• Feeding animals a low-protein diet.

• Allowing animals to roam freely.

• Increasing the space for animal movement.

• Keeping animals in temperature-controlled environments.

What percentage of energy is typically passed on to the next trophic level in a food chain?

• 1%

• 100%

• 50%

• 10%

What is a negative effect of pesticides used in intensive farming?

• They increase plant growth.

• They bioaccumulate and become toxic.

• They are harmless to top predators.

• They improve water quality.

How do modern fishing techniques impact aquatic ecosystems?

• They increase fish populations.

• They improve water quality.

• They lead to overfishing and ecosystem damage.

• They have no impact on aquatic life.