2.

(10 pt)
which of the following is an example of a chemical change?

a.

digestion

b.

chopping wood

c.

adding food coloring to water

d.

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

Which of these is a major trend in land plant evolution? a) the trend toward smaller size b) the trend toward a gametophyte-dominated life cycle c) the trend toward a sporophyte-dominated life cycle d) the trend toward larger gametophytes

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?