Page 7 - SAAT BIOLOGY PART 2

SAAT BIOLOGY MR.MOHAMED ELGAYAR MRPROF.NET
▪ Digestive system build

(Hummingbirds) Most common shapes of beaks are shredder

(eagles beak), and the probe.

▪ Bird levels:

• Finches: hummingbirds, like crows

• Penguins: it uses its wings as paddles or flippers to help it

swim, like penguins

• Ostriches: it does not fly, like ostriches

• Swans: water birds, like swans and ducks

A reason causing the extinction of birds is the destruction of its

habitats and illegal trading

▪ Mammals

• Special characteristics: Hair, Mammary glands

• Other characteristics: Constant body temperature,

Teeth, four-chambered heart, have uterus & placenta &

gestation.

MRPROF.NET MR.MOHAMED ELGAYAR MRPROF.NET@GMAIL.COM