<em>Most of the workers on the transcontinental railroad came from _____. </em>
China and Europe
Animals and other living things release carbon dioxide when they exhale.
Answer:
petroleum
Explanation:
d. all of the above.........
TTAGCCATG
Adenine pairs with Thymine
Guanine pairs with Cytosine
Hope this helps!!
A. Chlorofluorocarbons
Explanation: short answer