Which of the following might a scientist cite as a reason for the Cambrian explosion? A. Lower oxygen levels in the oceans.
B. Heightened diversity of fossils.
C. Heightened availability of minerals in the oceans.
D. Lowered predation leading to better survival of species.

Which part of cellular respiration must occur before any of the other steps can occur

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.

Sexual reproduction in the parent cell will result in offspring with a) identical genetic information. b) half the genetic information. c) double the genetic information. d) four times the genetic information.