greenhouse effect & global warming by rana m kashif (m.sc. hons.) agronomy

PRESENTATION ON THE TOPIC:GREENHOUSE EFFECT &

GLOBAL WARMINGBY

RANA MUHAMMAD KASHIFB.Ed. In-service

GCET, NAROWAL,UNIVERSITY OF EDUCATION,

LAHORE, PAKISTAN2016

Introduction

Greenhouse Effect Greenhouse gases Global Warming Causes Consequences Control Measures

The Greenhouse Effect

Who is responsible?

Natural Causes

Some claim the sun is getting hotter. Also, the earth goes through natural cycles of climate change.

Human Causes

Carbon dioxide (CO2) exhaust from cars and power plants.

Methane gas from waste

Deforestation

Consequences of global warming

Catastrophic weather such as hurricanes will increase.

Melting polar icecaps will raise ocean levels; the Arctic Ocean could be ice free in summer by 2050.

Heat waves, droughts, and wildfires will be more frequent.

Up to 300,000 people a year will die – partly from the spread of tropical diseases.

More than a million species worldwide could be extinct by 2050.

Endangered

Global sea levels could rise by more than 20 feet, devastating coastal areas

worldwide.

The future of our coastal cities?

Is it already too late?