Which of these would best fill in the chart for "b"? a) 0 chromosomes b) 23 chromosomes c) 46 chromosomes d) 69 chromosomes

9. wind power creates pollution. water air soil noise

If the coding part of an mrna molecule is 1800 nucleotides (bases) in length, this molecule will contain codons and code for a polypeptide that is amino acids long.

Which of the following would be a body response when stepping outside without a coat on a snowy day? a. senaceous glands. secrete more senum b. more liquid is transported by the body to the skin fir insulation c. blood vessels in the skin narrow and contract d. blood vessels in the skin expand