suppose you are a geologist tasked with analyzing the fossil record in your region and determining when a major marine extinction took place. what changes in the fossil record would you look for?

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate

Which words or phrases identify layers of groundwater? check all that apply. water table kettle lake saturation zone underground lake sinkhole will give brainiest, answer quickly.

Why is any chemical reaction always balanced? give reasons and explain the easiest way to solve the balancing problems in chemical equations with stoichiometric coefficients upto 20 as hit and trial doesn't always work. give full reasoning