Understanding Pollution in Food Chains

What is the key term introduced in the video related to pollution in food chains?

• Bioaccumulation

• Biodegradation

• Biomagnification

• Bioremediation

Why do farmers use insecticides on crops?

• To kill insects that eat the crops

• To increase the size of the crops

• To make the crops grow faster

• To enhance the color of the crops

What happens to insecticides when it rains?

• They are washed into water bodies

• They are absorbed by the soil

• They evaporate into the air

• They become ineffective

Which organism first absorbs the insecticide in the water?

• Small fish

• Algae

• Plankton

• Bigger fish

What is the role of plankton in the food chain described in the video?

• They decompose dead organisms

• They are the top predators

• They eat algae and are food for small fish

• They produce insecticides

What happens to the concentration of insecticides as you move up the food chain?

• It decreases

• It remains the same

• It increases

• It fluctuates randomly

What is the potential consequence for bigger fish due to bioaccumulation?

• They become more fertile

• They may die due to high insecticide levels

• They become more resistant to diseases

• They grow larger

What is the main focus of the video?

• The process of photosynthesis

• Pollution in food chains and bioaccumulation

• The benefits of insecticides

• The life cycle of fish

Which of the following is NOT a part of the food chain described in the video?

• Birds

• Algae

• Small fish

• Plankton

What is the key takeaway regarding the impact of bioaccumulation?

• It is beneficial for aquatic life

• It causes more harm to animals higher up the food chain

• It causes no harm to animals

• It only affects plants