Answer:
b. carb (sugars)
Explanation:
plants make glucose through photosynthesis
DNA microarrays allow the rapid and simultaneously SCREENING of many thousands of genes.
Molecule X is a nucleotide
Out of the choices given, the best way to describe the organisms of the Precambrian era are they were single-celled organisms and soft, boneless animals. One thing from that time that we still have today is the jellyfish. The correct answer is C.
It has more density than warm air
