The land area of Australia is about the same size as the land area of the continental United States. The correct option among all the options given in the question is option "D". Australia is the sixth largest country in the world in respect to its size. Russia, Canada, Brazil, USA and China have a larger area than the continent of Australia.
Answer:
In general, it is the climates (specifically temperature and its range, and the nature and availability of precipitation) that exert major influences on the geomorphic processes operating in particular zones of the land surface.
Explanation:
Rivers have helped them to plant crops and travel along the river to go to new places so they can trade.
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<u>ANSWER:</u>
Artificial levees are 'earthen mounds' built on the river banks to increase the 'volume of water' the channel can hold.
<u>EXPLANATION:</u>
- A levee or stop bank is called as a 'natural or artificial wall' or a bank which is used to protect the flooded water in a certain area and these Levees are made from the compact earth.
- There are two type of levee, artificial and natural. Artificial levee often seems to get damaged which may cause breach.
Answer:
There exists continental ans valley glaciers who ages have determined on the <u>basis of rock types and carbon datings</u>
Explanation:
- Glaciers were formed some 34 million years ago, in which first small glaciers were seen in Antarctica and that was 20 million years ago as the glaciers froze on to rocks and southern ice sheets were formed.
- The snowball earth existed from <u>2.4 to 2.1 billion years ago,</u> at that time Huronian glaciation i.e oldest ice age was built on earth having unicellular mass. As in the earlier phase, the snowball was completely frozen and 250 million years after the big volcanic activity that spread the carbon dioxide into the atmosphere and created the greenhouse gases.
- Evidence can be taken from the quaternary period of glaciation some 2.58 million years ago. As the ice sheets have gone through the multiple periods of growth and retreat as in the interglacial period the ice melted and retreated.
- Roughly about 41,000 million years ago the tilting of axis of the earth had a major effect on the ice sheets around the globe.
