The rate at which blood flows through the human body changes in response to many factors. which statement describes one of these factors and its effect on blood flow? a. the narrowing of blood vessels increases pressure and leads to faster blood flow. b. high blood viscosity increases the resistance in the blood vessels and leads to slower blood flow. c. low blood ph decreases the rate of diffusion through the blood vessels and leads to slower blood flow. d. the changing of the shape of red blood cells to a crescent shape decreases resistance and leads to faster blood flow.

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.

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: