Which piece of lab equipment is used to measure the mass of a chemical sample? a) balance b) thermometer c) spring scale eliminate d) graduated cylinder

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change

The relationship between intron and exon