A pronounced layer of which of the following can often be one of the most recognizable features of middle tidal zones along rocky coasts?
A) Limpets
B) Mussels
C) Sea Anemones
D) Sea stars
E) Sea urchin
B
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In which of the following locations can the smallest variation in day-to-day and month-to-month temperature be observed?
A. the Pacific coast of North America B. high in the mountains in the middle of a continent C. the centre of a large land mass D. a small island near the equator
Cell division resulting in two cells with the same number of chromosomes as the parent cell:a
mitosis d. divergent evolution b. meiosis e. mutation c. natural selection
Which of the following is one of the major pollutants of groundwater?
A) acid rain B) fertilizers from agricultural fields C) treated sewage from cities D) carbon dioxide E) home garbage
What is the definition of a turbidity current?
A) Subsidence of the seafloor B) Fast-moving water created by density differences C) Submarine landslide D) Focused jet of water blasting across the shelf from a surface stream