1. WHAT IS BIOLOGY?

2. Biology is the study of all living things.
From microscopic bacteria to the largest animal on Earth.

3. Living things are called organisms.

4. Living things are found everywhere in our biosphere.
The biosphere is all organisms and the parts of the Earth where they are found.

5. Organisms can be found …in the air

6. …in the soil

7. …in boiling hot springs
bacteria

8. ….in the deepest oceans

9. The variety of life is called biodiversity.

10. There are 1.6 million species described on Earth.
GROUP
Described species
Likely total
Insects
950,000
8,000,000
Fungi
70,000
1,000,000
Arachnids
75,000
750,000
Viruses
5,000
500,000
Nematodes
15,000
Bacteria
4,000
400,000
Vascular plants
250,000
300,000
Protozoans
40,000
200,000
Algae
Mollusks
Crustaceans
150,000
Vertebrates
45,000
50,000

11. But…… the estimated amount is 12,000,000 species.
NO WAY!!!!

13. What is a species?
A species is a particular type of organism that can reproduce by interbreeding among themselves and produce fertile offspring.

14. Male donkey + female horse = mule
infertile
Different species