1. explain why water conservation is important.
2. using water more efficiently
a.
protects the environment
b.
causes the loss of natural pollution filters
c.
increases water contamination
d.
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.

Si units are the modern form of the

In the 1500s, an astronomer developed a new model of the universe. this model had the sun at the center of the universe, not earth. who was this astronomer?