Pls help According to the Doppler Effect, why does a siren sound higher pitched as a vehicle drives toward a person, then lower pitched as the vehicle drives away? Question 38 options: The person's hearing cannot keep up with the moving vehicle. The vehicle had engine problems that made the sound change with distance. The sound waves are compressed as the vehicle drives toward the person and decompressed as the vehicle drives away. The sound waves are stronger as the vehicle drives toward the person and weaker as it drives away.

image result for describe the various types of gene mutationsghr.nlm.nih.gov

the types of mutations include: missense mutation: this type of mutation is a change in one dna base pair that results in the substitution of one amino acid for another in the protein made by a gene. nonsense mutation: a nonsense mutation is also a change in one dna base pair.

explanation:

the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.

garbage disposal because lysosomes dispose of old cell parts like garbage disposals dispose of old food.