The correct answer for the question that is being presented above is this one:
(1) contracting cloud of gas and dust
(2) protostar
(3) main-sequence O star
(4) red supergiant
(5) supernova
<span>(6) neutron star</span>
Here are the following items to be arranged:
<span>- protostar
- supernova
- contracting cloud of gas and dust
- main-sequence O star
- red supergiant
- neutron star</span>
Two major problems associated with petroleum products are the environmental hazards associated with its extraction from the earth and also the environmental impact of its burning which emits greenhouse gases into the atmosphere which has been shown to cause global warming and climate change.
The answer is ''Conversion of forests to grazing lands.'' So (C)
The spread began in the 7th to 9th century, originally brought to North Africa under the Umayyad Dynasty. Trade networks were extensive, spanning through north and west Africa which created a medium in which islam peacefully spread through the merchant class.
It would be harder for us to identify all the different types of animals that lived long ago.
