After examining a sequence of horizontal sedimentary rocks, a geologist determines that there is a considerable span of time for which no sedimentary rock layers exist at this location. The geologist discovered .

Which chemical equation is unbalanced? which chemical equation is unbalanced

Which of the following organisms are capable of self-fertilization? a.plants b.tigers c.humans

Prior knowledge can be gained from personal experience and a) forming well-developed hypotheses. b) listening to opinions of other people on a topic. c) researching previous experiments and results on a topic. eliminate d) no other methods. it can only be gained by personal experience.