Select the correct answer. The isotope calcium-41 decays into potassium-41, with a half-life of 1.03 × 105 years. There is a sample of calcium-41 containing 5 × 109 atoms. How many atoms of calcium-41 and potassium-41 will there be after 4.12 × 105 years? A. 3.125 × 108 atoms of calcium-41 and 4.375 × 109 atoms of potassium-41 B. 6.25 × 108 atoms of calcium-41 and 4.6875 × 109 atoms of potassium-41 C. 6.25 × 108 atoms of calcium-41 and 4.375 × 109 atoms of potassium-41 D. 3.125 × 108 atoms of calcium-41 and 4.6875 × 109 atoms of potassium-41

the elements of art are the visual tools that the artist uses to create a composition. these are line, shape, color, value, form, texture, and space.

the principles of art and design are balance, contrast, emphasis, movement, pattern, rhythm, and unity/variety.

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.

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