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 stars mass (once it becomes a star) is inversely proportional to its lifetime as a main sequence star. A red dwarf can survive for many billions of years; a star that has twice the mass of the Sun, such as Sirius A, will have 25% of the Suns lifetime.
Hope this helps :)
Explanation:
Answer:
Canes Venetic, Centaurus, Coma Berenices, Corves, Crux, Musca and Virgo. Canes Venetic and Coma Berenices are northern constellations, while Centaurus, Virgo, Corves, Crux and Musca lie
Explanation:
They should bring everything the person asked for and be on time.
According to worldometers, asia's<span> population is equivalent to </span>59.69%<span> of the </span>total world population<span>. Europe's population is equivalent to 10%. Therefore the correct answer is true.</span>
