According to the fossil record found in these sedimentary layers, what conclusion can be drawn about the movement of life to land? a) land plants and mammals evolved at the same time. b) as land plants became more complex, animal life did as well. c) mammals and insects evolved at about the same time in earth; s history. d) flowering plants and trees became established before animals moved to land.

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.

What is the atomic number of an atom that has 6 protons

The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point