Suppose you provided water with radioactive oxygen atoms to a plant. Into which kind of molecule would the radioactivity go?

Suppose a scientist finds a rock with an interesting fossil. Curious to know the age of the fossil, she takes the rock to a lab. The lab determines the amount of rubidium (Rb) and strontium (Sr) in the rock. The scientist is familiar with radiometric dating and knows that she can now calculate the age of the rock, 1, using an isochron. The Rb-Sr isochron equation is 87. Rb. [edr – 1] 86 °Sr. 87 87 Sro 86 Sro 86 Sr. 87. Rb 3.807 and 89.60. In a published table, she finds that Using the lab's values, she calculates the isotope ratios as 86 Sr. 87 = 0.7129. She also finds that the decay constant, 86 the ratio of strontium-87 to strontium-86 at the formation of the rock was Sro 2, for rubidium-87 is 1.42 x 10-11. Use the equation and provided data to calculate t. Put your answer in scientific notation and round to the nearest tenth. years x10 What is the approximate age of the rock in billions of years? Round to the nearest tenth. billions of years t =

Contrast is the extent to which detail in an image is preserved during the magnifyingprocess. is the amount that an object's image is enlarged. is the degree to which image details stand out against their background. focuses radiation emanating from an object to produce an image. Question 6 (1 point) The maximum useful magnification for a light microscope is about 100X 1000X 10,000x 100,000X Question 7 (1 point) The two image-forming lenses of a compound light microscope are the condenser and the objective the condenser and the ocular the objective and the ocular none of these.

In the Urey-Miller experiments with the origin of life forms, what was the purpose of the electric sparks passed through a mixture of gases? Group of answer choices   simulate lightning   simulate sunlight   simulate temperature   produce rain from clouds   sterilize the gases