I'll see if they have been so long ago that you can get the idea is that it
A laccolith is a dome shaped intrusive body that has intruded between layers of sedimentary rock. The rising magma forces the overlying layers to rise up into a dome.
The correct answer for the question that is being presented above is this one: "oxygen became available from cyanobacteria." About 1.2 billion years ago, eukaryotic and multicelled organisms evolved because oxygen became available from cyanobacteria.
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.
The American Smelt averages 10inches in length, most species are Marine, and the feeding habits are destructive and sometimes cannibalistic.
