Answer;
B) four chromosomes
Explanation;
-Mitosis is a type of cell division that involves nuclear division in eukaryotic cells and occurs when a parent cell divides to produce two identical daughter cells.
-Mitotic cell division produces two daughter cells that are genetically identical to each other, and to the parental cell. Thus, a diploid cell, 2n, (contains two sets of chromosomes), yields two daughter cells that are also diploid.
-For example, in human beings, mitosis takes place in the somatic cells where a parent cell with 46 chromosomes produces two daughter cells each with 46 chromosomes.
Gases, too much carbon dioxide being lifted in the air. Factories, waste and waste in water. Hope this helps.
I have just taken the test, and the answer is in fact B.
Closed system - energy can enter or leave the system but matter cannot
Open system - both matter and energy are exchanged freely between the system and the surroundings
