What can create variations in color or structure in hair samples?
dyes
the location on the scalp the sample is pulled from
the length of the strand
all of the above

Select the correct answer from each drop-down menu. during the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?

If t=tall and t=short what is the likelihood that the offspring will be tall? a.0% b.25% c.50% d.75%