Answer:
The two substances combined to form a new substance.
Explanation:
In the context, it is given that Mary has two beakers A and B. Beaker A is filled with a colorless liquid while that of beaker B consists of a liquid which is blue in color. Therefore the two beakers have two different substances. When substance from the beaker B is added to beaker A, a solid is formed which is pink in color. Thus we can conclude that when the substance form beaker B i.e. the pink liquid is mixed with the substance in beaker A, a new substance is formed. Therefore, the two substances combines and forms a new substance.
The war officially ended in 1783
Answer:
6 billion
Explanation:
The world's population reached its first billion in 1804. By the year 1960, there were approximately three billion of people on earth. By the year 1999, the population grew to 6 billion.
According to recent prognostics, by the year 2024, the world's population would reach eight billion people.
The world population is the total number of humans currently occupying the earth. The highest population growth rates happened between the years 1950-1970.
The answer is:
- mitochondria and chloroplasts originated as ingested prokaryotes
- mitochondria and chloroplasts have their own DNA
Prokaryotes are exist in simple form organisms (such as single celled animals) Plants in general are considered to be complex organism. Since mitochondria and Chloroplast have separates DNA this fact could be used as an indicator that at one point in time complex organisms were originated from simple form organisms that undergone the process of evolution.
