Correct answer is B.
Explanation:
In their nucleus cells contain DNA. The DNA has information about size, shape and function of each cell. When the cell reaches it's full size it stops growing and starts doing whatever it's function is. If more cells are needed then the cell replicates. This explanation excludes answers A and C.
Male and female sexual cells are used to conceive a baby. These cells combine to form a new type of cells. In the first few weeks all types of cells are created. Then the creation of new types of cells stops and existing cells multiply in order to achieve needed number of cells. This explanation excludes answer D.
When we compare an adult person and a baby we can see that, for example, an adult has bigger bones than a baby. This was result of increasing number of existing types of cells without creating any new type.
Answer:
The amount of sunlight changes when moving between north and south.
Explanation:
Climate change results from global warming which is an increase in the temperature of the earth.
The sun is the primary source of temperature change on earth, and latitude place a great role in the amount of sunshine that come to an area. Places at high latitude receive less sunlight when compared to places at low latitude, this in turn determines how warm or cold a region can be. On the other when moving from east to west, it is along longitudinal lines and this can be on same elevation, thus there are no significant changes in temperature.
Therefore sunlight plays a key role in altering the temperature along latitudes.
