What are some threats to biodiversity in the southem Appalachian forests? A logging
B farming or other land developments
C invasive species
D pollution
E illegal hunting or collecting
F all of these
G none of these​

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

(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.

What is any method of measuring the age of an object or event in years, such as using atomic half-life?