Which two options are examples of chemical changes? A. When two clear, colorless liquids are mixed together, a white solid forms. B. A white powder mixed with a clear, colorless liquid makes a solution that is also a clear, colorless liquid. C. A shiny metal bar glows red and expands when heated. D. A white piece of paper turns black and gives off a smell when burned.

When does a spring tide occur? question 9 options: they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur twice a year in the spring and fall. they occur on the date of the vernal equinox each year, no matter what stage the moon is in. this is why they are called spring tides. they occur when the sun, moon, and earth are at 45-degree angles from each other. this happens once every spring. they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur all year long.

Across between one homozygous dominate individual and one homozygous recessive individual results in a individual

Using the graph, determine the half-life of thorium-232. question 12 options: 7 billion years 14 billion years 28 billion years 35 billion years