61. A measure of acidity or alkalinity of water soluble substances. A pH value is a number from 1 to 14, with 7 as the middle point. Values below 7 indicate acidity which increases as the number decreases, 1 being the most acidic.
62. The pH scale typically ranges from 1 to 14, with lower numbers representing acids, higher numbers, bases. Neutral liquids like water have a pH of 7.
63. The pH scale ranges from 0 to 14.
64. A major problem with the use of fertilizers occurs when they’re washed off the land by rainwater into rivers and lakes.
(2) Electrophoresis.
Chromatography is the separation of colors/inks.
Replication replicates DNA.
Dissection can't really be done on DNA.
Electrophoresis is a process using gel that separates DNA by size.
Acid rain is an example of chemical weathering
Answer:
To first started living on land and that is where the traits and transitions moved to water instead of land
Hope this helps,if not sorry
Answer:
B. The population size decreases.
Explanation:
Birth means being born, and immigration means moving into a country.
Death means loss of life, emigration means moving out of the country.
If death and emigration rates are greater than birth and immigration, then the population of that country is declining.
