Toxins in the Food Chain

Toxins in the Food Chain. How Harmful Substances Affect Animals and Us.

What Are Toxins?. Toxins are harmful substances that can be found in the environment, including in the food we eat..

How Toxins Enter the Food Chain. Toxins can enter the food chain through polluted water, soil, and air. Plants absorb toxins, and then animals eat the plants..

Bioaccumulation. Bioaccumulation is when toxins build up in an organism over time. This happens because the toxins are stored in the body's fat and do not get excreted..

Biomagnification. Biomagnification is when the concentration of toxins increases as you move up the food chain. For example, a small fish eats plants with toxins, a bigger fish eats many small fish, and so on..

Effects on Wildlife. Toxins can cause health problems in animals, such as weakened immune systems, reproductive issues, and even death..

Effects on Humans. Humans can also be affected by toxins in the food chain. Eating contaminated fish or meat can lead to health issues like cancer and neurological problems..

Reducing Toxins in the Food Chain. We can reduce toxins by limiting pollution, using fewer pesticides, and supporting clean energy sources..

Fun Facts About Toxins. Did you know that some plants can absorb toxins from the soil and help clean the environment? Or that mercury, a harmful toxin, is found in some types of fish?.

Recap & Questions. Quick recap of how toxins enter the food chain and their effects. Ask students if they have any questions..