D. a new substance is formed. if it is chemical change then it is actually changing to something new. In this case a new substance is formed. It is a completely different substance from what you started out with.
Answer:Causes of Global warming
Explanation:
Where are the extra Green house gases coming from?
Most scientist think that human activities such as burning fossil fuels, using cars and other vehicles ,and clearing forest have increased the amount of carbon dioxide in the atmosphere. There are green house gases in our atmosphere,e.g. water vapor , carbon dioxide , methane nitro us dioxide and ozone.
They absorb heat from Sun rays and radiate in all directions, which warm's the Earth.The Earth could become too hot and this causes climate change which has a lot of effects on Earth. Earth's dry regions will become more drier and wet regions will become more wetter e.g.
Answer:
e. 1.588 billion years
Explanation:
the sequence of rocks IS 1.588 billion years
The correct answer is - D. all of the above.
In essence, spatial terms in geography refers to the describing of things that are relating to areas.
So population, trade flows, cities and towns, can all be observed as things in an area. Population can be seen area by area, so that the density, ethnicity, education etc can be seen and compared between areas. The trade flows usually are divided into trade zones, or trade areas, and cities and towns all belong to a certain area.
