Americium 241 undergoes radioactive decay to produce neptunium 237. Which partiele needs to be added to this equation to show that the total
numbers of neutrons and protons are not changed by the reaction?
AM - "Np+?
A He
B He

Which macromolecules are polymers made of nucleotides (a) fatty acids (b) nucleic acids (c) carboxylic acids (d) amino acides

Which of the following will not cause mass extinction? a. drastic change is weather b. geological change c. both a and b d. none of the above

Charles darwin published his theory of evolution in 1859. in what way foes modern evolutionary theory differ from the theory as proposed by darwin? a) darwin inferred that individuals can evolve, but modern generic science has shown that this is not true. b)darwin inferred that individuals do not evolve, but modern genetic science has shown that this is not true. c)modern science has disproved most of darwin's original theory of evolution, because darwin knew nothing about generations and their role in heredity. d)generic studies have shown that gene expression and other factors operate along with natural selection, but most of darwin's theory has been supported by modern science.