1. 5/31 & 6/1 - 7th Grade Agenda
Collect HW: Homework: Reading & Notetaking p. 239 – 241
Give extra credit points for Moss Biosphere
Mammals
Squid Lab
Video: BBC Life (Mammals)
Textbook Reading
HW: Reading & Notetaking p.243 – 246

2. Reflection
Prompt: Write 3 facts that you know about birds.

3. Characteristics of Mammals
endothermic vertebrates
four-chambered heart
skin covered with fur or hair.
Most mammals are born alive
young mammal is fed with milk

4. Do Dolphins have hair? Yes. Near their blow holes
Most of the hair disappear when they get older

5. What are the function of hair and fur?
Fur and hair prevent body heat from escaping
Helps maintain a stable body temperature in cold weather
Animals in cold regions have thicker coats of fur

6. When did the first mammals appear?
About 270 Million years ago
They were small mouse like animals
After the dinosaurs disappeared about 65 million years ago, larger mammals evolved

7. You can tell the type of food mammals eat by its skull & teeth.
What type of food does this animal eat?

8. You can tell the type of food mammals eat by its skull & teeth.
What type of food does this animal eat?

9. Do some mammals lay eggs?
Yes.
Monotremes lay eggs:
Two types of Monotremes are: Spiny Anteaters & Duck billed platypus

10. What are Marsupials? Marsupials are mammals The young are born alive
But at an early stage of development, they develop in a pouch on their mother’s body

11. Baby Kangaroo in mother’s pouch

12. What are Placental Mammals?
Placental mammal develops inside its mother’s body

13. Diversity of mammals
Most of the mammal species are bats and rodents