Some materials contract when heated rather then expand as most materials do.
<span>The answer is A) DNA.
The genetic information of the cell is packed within a nucleus. Unlike other organelles of the cell, chloroplasts and mitochondria have their own genetic information as well in the form of DNA. Mitochondrial DNA is circular in most of the organisms, only some protists, fungi and plants have linear mitochondrial DNA. It contains genes that code for transport RNA, ribosomal subunits, and for other proteins necessary for mitochondrial function. Chloroplast DNA has branched linear form. Chloroplast genes mostly code for proteins involved in photosynthesis.</span>
B to obtain oxygen
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The moon reflects light from the Sun, and the sun shines on the planets :)
Fossils reveal what may have been living in the surrounding environment hundreds of years ago.
