Explore & Learn

1.) proper disposal of garbage

a.) Dump outside the city limits:

b.) Land fills

c.) composting

d.) Buning of refuse:

e.) incineration

Some other measure to control soil pollution are:

. use of sanitary

. limited use of insecticide and fertilizers

. use of environment-friendly products

1.) structure: The heart is a muscular organ roughly the size of a fist,located slightly left of the chest. it has four chambers:

. right atrium and left atrium (upper chambers)

. right ventricle and left ventricle) (lower chambers)

2.) function:

. The right side of the heart pumps deoxygenated blood to the lungs,where it gets oxygenated.

. The left side pumps oxygenated blood to the rest of the body

3.) Heart beat: The heart beats about 60-100 times per minute in a healthy adult at rest. the rhythm is controlled by electrical signal that orginate in the sinoatrial (SA) node,which acts as the natural pacemaker of the heart.

4.) circulatory system: The heart is part of the circulatory system,which consists of the blood vessels and the blood itself. it works closely with the arteries,veins,and capillaries to ensure the efficient

5.) Health: A healthy heart is essential for overall well being conditions such as covonary artery disease,heart attacks,arrhythmias,and heart failure can negatively affect heart function

1.) Which two rivers was Mesopotamian located between

Ans) Tigris and euphrates

2.) in which modern day country was Mesopotamian located

Ans) Iraq

3.) what was the name of the script used by the mesopotamians ?

Ans) cuneiform script

4.) what type of symbols were used in the cuneiform script ?

Ans) wedge-like lines

5.) what was the ruling class of mesopotamian mainly composed of

Ans.) The ruling class consisted of priests,king and aristocrats besides them there were merchants ordinary people and the slaves

fill in the blanks

1.) Tigris and eupharates

2.) wedge like lines

3.) carts

4.) god or goddes

5.) aristocrats

short questions

1.) why was the land of mesopotamia fertile

Ans) mesopotamia was the land lying between two rivers tigris and eupharates,which lie in modern day iraq. these rivers were often in flood and in this process they dposited a lot of slit which made the land around them very fertile

. Make sure that untreated. sewage water is not thrown into the sources of water.

. Industries should not be allowed to throw untreated wastes into the river or pond

. Defection in open and near the water source be discourage. use latrines for defecation

. Latrines soakage pits,dumping grounds and land fills should be for away from source of water

. Bathing washing clothes or bathing animals in or near the harvested water sources should be banned. rain water in Special ponds or well should be used for washing clothes and bathing animals

. Rivers and seas should not be used for disposal of garbage.

. If you are using a well or a pond as your source of water,see that it has a concrete wall or parapet and proper pucca Firm flooring around it

. Water should be stored in clean containers which are kept covered. use a ladle with a long handle to take water out from its container. never dip you hand in the water

major cities:

. Harappa

. mohenjo-daro

. Lothal

. kalibangan

. ropar

. Banawali

. rakhi gorhi

. Dholavirva

urban planning and infrastructure

. well-planned cities with wide roads and bricks houses

. Advanced drainage system and street lighting

Agriculture and animal husbandry

. cultivated wheat,barley,rice,and cotton

. Domesticated cattle,sheep,goats,and buffaloes