Which type of mutation never causes a change in the function of the protein encoded by the mutated gene?

nonsense mutation
silent mutation
missense mutation
frame-shift mutation

Suppose you are estimating the size of a blue crab population. what is the population size if the number marked in the first catch is 40, the total number in the second catch is 200, and the number marked in the second catch is 50?

This part insulates the reaction chamber from the transfer of heat to or from the surrounding environment

Which event would lead to primary succession of a forest?