Which of the following is not one of the three processes that were most intense during the first few hundred thousand years of the earths history?? Radioactive decay of unstable isotopes cooling of the mantle extraterrestrial impacts gravitational contraction of the earths interior

What statements describe a host organism?

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Blank is a rock with a find dark texture that makes up the oceanic crust