B, overfishing in coral reef ecosystems
ANSWER: Polypeptides
EXPLANATION: Polypeptides are chains of many amino acids that are held together by peptide bonds.
Last sentence is the correct one hope this helps
Williamson ether synthesis is an organic reaction, forming an ether from an organohalide anda deprotonated alcohol(alkoxide). It involves the reaction of an alkoxide ion with a primary alky halide via SN2 reaction. The reaction to form propoxypropane using Williamson reaction is as shown
CH3CH2CHONa + CH3CH2CH2Br = C2H5CH2-O-CH2C2H5 + NaBr
Sodium propoxide 1-Bromopropane 1- Propoxypropane
<span>homozygous normal,” and the </span>TT genotype<span> as the “homozygous variant. Did this help?</span>
