Page 20 - Geography for Secondary Schools Student’s Book Form One

Geography for Secondary Schools
Student’s Book Form One

Solar system is composed of a set of contains different gases such as oxygen,
different types of planets, moons, asteroids, carbon dioxide, hydrogen, nitrogen, and
comets, meteorites, interplanetary dusts ozone gas. All these gases are essentials for
and gases. Planets are arranged from the life on Earth. Also, the Earth has important
outer gas giants which consist of Jupiter, nutrients found in the soil, air, and water,
Saturn, Uranus, and Neptune to the rocky which are essential for living things.
FOR ONLINE READING ONLY
inner planets which comprises of Mercury, Furthermore, the position of the Earth in
Venus, Earth and Mars. The inner planets the Solar system makes its temperature
are smaller, hotter, and solid than the outer suitable for plants and animals.
planets which are large, cold, and gaseous Due to this, it is evident that the planet Earth
in nature. is a unique and precious celestial body in

The Earth is the third planet in position the universe. It is the only known celestial
from the Sun (Figure 2.2). Making life body that supports life. Despite this, still
possible is the distinctive features of planet the Earth faces numerous challenges, such
Earth among other planets in the Solar as climate change, pollution, deforestation,
system. The planet Earth is located about loss of biodiversity, and overconsumption
150 million kilometres from the sun. The of natural resources, which are associated
Earth supports life due to presence of water. with unsustainable human exploitation of
Water exists in three states: liquid, solid, resources. Increasingly, the challenges are
and vapour. It has an atmosphere which threatening life on the planet.

Figure 2.2: The position of Earth in the solar system

14

18/10/2024 18:32:30
GEOGRAPHY (F1) TO PRESS.indd 14 18/10/2024 18:32:30
GEOGRAPHY (F1) TO PRESS.indd 14