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I want to know the understanding of bioaccumulation ( sorry if I spelt that wrong)?

1 answers
Answered May 18Science
Mujavid's profile picture
Mujavid BukhariCoding teacher, previously Software Engineer at Google and studied CS at UCL139 students helped

You spelled it correctly! Bioaccumulation is the build up of toxins in a food chain, so that animals at the top are most severely effected. Let’s look at an example, to make things clearer. We’ll use the simple food chain: plant -> mayfly -> dragonfly -> salmon Plant has 1 toxin. Mayfly eats 2 plants. It has 2 toxins (2x1). Dragonfly eats 4 mayflies. It now has 8 toxins (4x2). Salmon eats 100 dragonflies. It now has 800 toxins (100x8). Notice how the plant only had 1 toxin, which is safe. But because each animal eats many of a smaller animal, it ends up getting more toxins. This adds up over time, until animals at the top have a very high number of toxins. In our example we can see that the salmon has over 800 toxins, as a result. This is bioaccumulation.