Presentation

1. DRILL Species - a set of animals or plants, members of which have similar characteristics to each other, and which can breed with each other 2. Habitat - is a place where an organism lives. 3. Extinction – refers to the complete disappearance of a species from Earth. 4. Endangered - a species is in danger of extinction throughout all or a significant portion of its range.

2. The Philippine Eagle

3. The Philippine Tarsier

4. Philippine Forest Turtle

5. Cebu Brown Dove

6. The Philippine Tamaraw

8. FACTORS THAT CONTRIBUTES TO SPECIES EXTINCTION

9. Learning Objectives • At the end of the lesson, the students should be able to: • Identify the different factors that contributes to species extinction. • Perform an activity on identifying the different factors that contributes to species extinction. • Appreciate the importance of knowing the different factors that contributes to species extinction.

10. Activity Time Group I - OVREHRAVESGNIT = ­__ ___ ___ ___ ___ ___ __ ___ Group II- ESDURTCION FO BITATHA = __ __ __ ___ __ __ __ Group III- OLLUPIONT = __ __ ___ __ ___ __ ___ Group IV- UHNTGNI = __ __ __ __ __ __ __

11. Activity Time Group I – OVREHRAVESGNIT = OVERHARVESTING Group II- ESDURTCION FO BITATHA = DESTRUCTION OF HABITAT Group III- OLLUPIONT = POLLUTION Group IV- UHNTGNI = HUNTING

12. Factors that Contributes to Species Extinction • Hunting - Hunting results in the population depletion of different species of plants and animals, eventually leading to extinction. Why hunt? • to exploit the animal's body for meat and useful animal products • for recreation

13. 2. Habitat Destruction - When a habitat is destroyed, the plants, animals and other organisms that occupy the habitat have reduced their carrying capacity or ability to survive, to the point that populations decline and become extinct.

14. 3. Pollution - the introduction of harmful materials into the environment. - When the higher-level predators have higher level toxins, they are likely to suffer the diseases, birth defects, genetic mutations and other deleterious effects. Examples: • Air Pollutants – toxic smoke, gas • Water Pollutants- toxic materials that mixes with water • Land Pollutants- garbage, pesticides, insecticides.

15. 4. Overharvesting - exploiting a natural resource until its supply is so diminished that its exploitation is no longer sustainable. Resources that can be overharvested include: • plants • terrestrial animals • fish and marine invertebrates • renewable natural elements such as forests.

16. Photo quiz: The words in the box are some of the causes of species extinction. Look at the pictures below and identify which cause of extinction matches each group of pictures. Write ONLY the LETTER of the correct answer. Taking Animals for Profit B. Introduced species Hunting and Trapping Destruction of habitat Overharvesting Pollution 1. ____

17. 2. ____ Taking Animals for Profit B. Introduced species Hunting and Trapping Destruction of habitat Overharvesting Pollution

18. Taking Animals for Profit B. Introduced species Hunting and Trapping Destruction of habitat Overharvesting Pollution 3. ___

19. 4. ____ Taking Animals for Profit B. Introduced species Hunting and Trapping Destruction of habitat Overharvesting Pollution

20. 5. _____ Taking Animals for Profit B. Introduced species Hunting and Trapping Destruction of habitat Overharvesting Pollution

21. Assignment: List down different species of plants and trees located in your surroundings at home. Then list down how many plants/trees per species.