Human Organ System

Digestive System:
break down food and absorb its nutrients.

Respiratory System:
take in oxygen and releases waste gases.

Nervous System:
control sensation, thought, movement, and virtually other body activities.

Circulatory System:
transport oxygen,nutrients and other subtances to cells and carries away wastes.

Excretory System:
the function of excretion, the bodily process of discharging wastes.

Plant Structures

-Flower
reproductive system (seed, it can grow into new plant)







-Leaf
food factories of the plant photosynthesis

-Stem
to support the leaves/flowers (to hold) above the ground chlorophyll (a green pigmen)







-Root
to absorb water and mineral from the ground

2nd Animal Classification

Invertebrate(without backbone):


Moluscs
 -having a soft body and protected by a hard shell
 -body without cavity
 -has a pair of kidneys
Example: seahorse and snail

Athropods
 -compound eyes(like flies)
 -body are divided into segments
 -the sexes nearly always seperate
Example: spiders and scorpions

Annelids
 -they have no skeleton
 -the brain is small and is located in under the pharynx
 -the worms contain a thin water proof layer called cuticle
Example: earthworm

1st Animal Classification

Vertebrate(with backbone):

Fish
 -have fins
 -skin cover with scales

Bird
 -have feathers
 -have 2 wings to fly
 -have beak

Amphibians
 -use their skin as a secondary respiratory surface
 -they are often ecological indicators
 -egg firtilized outside the female body

Reptiles
 -lay egg on land
 -having skin covered with scales or horny plates
 -breath with lungs

Mammals
 -whose young feed by milk
 -red blood cells that lack a nucleus
 -covering hair on some or most of the body

Hawk and Heron

                                                      Hawk:

-Common they are some bird of prey.
-Widely distributed and avarying greatly in size
-They are mainly woodland birds with long tails and high visual acuity
Habitat: Africa and Australia


Heron:

-Long-legged freshwater and coastal birds
-Medium to large sized birds
-Long neck
Habitat: All continent except Antarctica