Compersion of soil and air.
Answer:
What is a. A; A
Explanation:
Drop 1 struck the surface from direction A, and drop 2 struck the surface from direction A.
Answer:
During a chemical change, the composition of matter always changes. Four possible clues to chemical change include a transfer of energy, a change in color, the production of a gas, or the formation of a precipitate.
Explanation:
Answer: D
Explanation:
Ensuring that they don't lose their habitat and protecting them is key. Not adding in other invasive species or overexploitation. Conserving would cut the pollution (and if done globally it would cut back global warming). So if we protect the current species more will come or the current will evolve and be able to reproduce.
Can you please put the graph in the question so I can see it?
Acids have a pH level power than 7. Water is usually close to 7 pH, but it is usually diluted because of various factors. I'm assuming you mean the pH of the sample was 5.4? This would make more sense. The acid rain would lower the average pH because the rain has a pH less than 7. The rain's pH will also be less than 5.4 because it would need to average with the waters previous pH to get this number.
