How is radioactive decay used to date sedimentary rocks? The amounts of potassium and argon in sedimentary rocks are measured.
The amounts of carbon-14 and nitrogen in sedimentary rocks are measured.
The amounts of unstable elements in each layer of the sedimentary rocks are compared.
The amounts of unstable elements in the volcanic layers above and below the sedimentary layers are measured

1. in a certain species of plant, the color purple (p) is dominant to the color white (p). according the punnett square, what is the probability of and offspring being white? 50%25%0%100% 2. in a certain species of plant, the color purple (p) is dominant to the color white (p). according the punnett square, what is the probability of and offspring being white? 0%100%50%25%(picture 1 is for question 1, and picture 2 is for question 2)

3differences between bacteria and other 2 cells

30 points why do tornadoes happen more frequently in the summer? they require warm air. they form over large, warm bodies of water. they require dry air. they require dust which is present in the summer.