As rain mixes with chemicals such as sulfur dioxide in the air, acid rain is produced. this may result in
(a) lowering the ph in ponds, thus limiting the survival of many organisms
(b) lowering the ph in ponds, thus affecting water temperature
(c) raising the ph in ponds, thus encouraging the growth of organisms
(d) raising the ph in ponds, thus limiting animal development
(e) depleting atmospheric carbon dioxide available for photosynthesis

Which of the following is not an example of conflict between related individuals?

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.

The pronunciation aid that determines the stress placed upon a syllable is the