Which phrase describes carbon-14 dating?
uses the rate at which nitrogen-14 decays into carbon-14
dates the remains of organisms to determine when they died
measures the number of unstable elements in ancient volcanic rocks
determines the age of ancient fossils older than 50,000 years old
Mart this and return

In 1992, hurricane andrew left a wake of destruction through florida. one victim of the storm was a reptile-breeding facility. over 900 burmese pythons were set free, and today thousands of pythons live in florida. these pythons are an invasive species, or a harmful species not native to the region. 1. what impacts do you think the burmese pythons might have on local ecosystems

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities