Question 13 (2 points) Which particles are located in the nucleus of the atom? (2 points)
O a
Neutron and electron
b
Neutron and proton
Ос
Proton and electron
Od
Only neutron
Question 14 (2 points)
A student thinks that halogens are highly reactive because their electrons are weakly attracted to their nuclei.
this student's idea? (2 points)

Which type of bacterial reproduction is depicted in the diagram?

Which of the following scenarios is an example of the bottleneck effect? answers a in south africa, much of the afrikaner population is descended from a small number of dutch colonists. in this population, this is an unusually high frequency of pseudoxanthoma elasticum (pxe), an elastic tissue disorder. b four white-tailed deer are introduced to a park in finland. thirty years after their introduction scientists compare the genes in the population and find that there is no variation. c during the industrial revolution, london's air became filled with soot. as a result, birds started eating more of the lighter moths because they were easier to spot than their darker counterparts. over time, the moth population changed so that there were more darker moths than lighter ones. d 10% of the population of american alligators in an area have the recessive trait albinism. a massive flood results in the death of 80% of the population. of the remaining population, 60% have the recessive trait of albinism.

How do you date a sample of rock that you suspect as being one of the earliest on earth