4.4 Bioaccumulation

Lesson 2.5

Bioaccumulation

15 / 09 / 2022

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Slide 1: Slide

BioSecondary EducationAge 13

This lesson contains 29 slides, with interactive quizzes, text slides and 3 videos.

Items in this lesson

Lesson 2.5

Bioaccumulation

15 / 09 / 2022

Slide 1 - Slide

Choose an emoji to tell us how you feel today.

😒🙁😐🙂😃

Slide 2 - Poll

I can define (give the meaning of) ‘bioaccumulation’.
I can state 2 ways how 'bioaccumulation' impacts or affects the organisms in an ecosystem.

GOALS

Slide 3 - Slide

Lesson 2.5

Bioaccumulation

15 / 09 / 2022

Slide 4 - Slide

Slide 5 - Slide

Key words

" Bio " means life or living organisms.

Slide 6 - Slide

Key words

" Accumulate " means gather together or get an increasing number or quantity of.

Slide 7 - Slide

Key words

" Bioaccumulation " means getting an increasing number of harmful chemicals in the bodies of living organisms.

Slide 8 - Slide

Key words

" Biodegradable " means can be decomposed or broken down into tiny pieces by bacteria or other living organisms so that we prevent pollution

Slide 9 - Slide

Key words

" Insecticide " means any toxic substance that is used to kill insects.

Slide 10 - Slide

Slide 11 - Video

Key words

" Decomposers " means organisms that break down dead or decaying organisms.

Slide 12 - Slide

Slide 13 - Video

00:16

What does a decomposer do to dead, decaying organisms?

makes it alive

breaks it down

Slide 14 - Quiz

Lesson 2.5

Bioaccumulation

14 / 09 / 2022

Slide 15 - Slide

DDT

(dichloro-diphenyl-trichloroethane) was the first of the modern synthetic insecticides in the 1940s. It was initially used to prevent malaria, typhus, and the other insect-borne human diseases

Slide 16 - Slide

DDT

a persistent chemical (it stays in the environment for many years).
This chemical CANNOT BE broken down by decomposers.

Slide 17 - Slide

Slide 18 - Video

Lesson 2.5

Bioaccumulation

15 / 09 / 2022

Slide 19 - Slide

Is the number of DDT in our body MORE than in one of the three fishes we eat? Why?

Question Goal

Slide 20 - Slide

If we eat 3 fishes with 1 DDT each, then we will have ________ DDT than ONE fish because _________.

Hypothesis

Slide 21 - Slide

If we eat 3 fishes with 1 DDT each, then we will have ________ DDT than ONE fish because _________.

timer

4:00

Slide 22 - Open question

Lesson 2.5

Bioaccumulation

15 / 09 / 2022

Slide 23 - Slide

= DDT

Slide 24 - Slide

= DDT

Slide 25 - Slide

How many ppm (parts per million) of DDT is in the shark after eating two tuna fish?

Slide 26 - Quiz

REFLECTION

15 / 09 / 2022

Slide 27 - Slide

I THINK I NEED MORE PRACTICE ON:
1 - I can define (give the meaning of) ‘bioaccumulation’.
2 - I can state 2 ways how 'bioaccumulation' impacts or affects the organisms in an ecosystem.

1 and 2

I am now confident.

Slide 28 - Poll

HOW WELL DID YOU PARTICIPATE TODAY?
1 - I need to participate more! ⚠️
2 - I have participated and I will do more next time! ☺️
3 - I did an excellent job today! 🏆

Slide 29 - Poll