Crabs, lobsters, shrimp, and barnacles are members of the subphylum
a. diptera.
c. crustacea.
b. centipeda.
d. arachnida.

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Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment

Prior to the mt. st. helens eruption on may 18, 1980, satellite and topographic views of the volcano were captured. based on the topographic map of mt. st. helens, what is the contour interval if the volcano height is 2,950 m? question 9 options: 600 m 400 m 750 m 500 m