Igneous rocks can be found In the earths surface
metamorphic rocks can be found mountainous regions
sedimentary rocks can be found In earths upper crust!
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Copper. Copper(Cu) is deadly to sheep because excess amounts of copper are concentrated in the liver rather than being excreted. Over time, this excess of Cu can destroy liver tissue, resulting in death of the animal.
Explanation:
Chromosomes contain nucleus that make up DND, RNA, and protein ( histone)
The correct option is D. There are four different nitrogenous bases in DNA molecules; these bases are joined together by different forces including hydrogen bonds. In DNA molecules, there are two hydrogen bonds between adenine and thymine while there are three hydrogen bonds between cytosine and guanine. Thus, the hydrogen bonds between cytosine and guanine is the stronger.