The conduction velocity of an unmyelinated neuron is 2 metres/second (m/s), while the velocity in a myelinated neuron is 120 m/s. How many milliseconds (ms) would it take for a nerve impulse to travel
1.6 m, if the nerve is unmyelinated? Round your answer to 1 decimal place.
Enter time in ms as a numerical value only (do not enter the units):

Afarmer has applied a pesticide to control a pest population that is affecting her crops. the pest population has reacted as shown below. which best describes the process that the pest population has experienced due to this environmental change? a genetic diversity b natural selection c natural resistance d genetic resistance

Which must be kept in mind when determining if an explanation is correct? check all that apply.which must be kept in mind when determining if an explanation is correct? check all that apply.

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.