Answer:
B. An element whose particles are molecules.
Explanation:
Answer : The chemical formula of pure substances are different from those of mixtures because all the matter that exists on earth can be classified into two categories namely; pure substances and mixtures.
A pure substance always consists of a single element or compound. Example Oxygen is formed only of oxygen (O) atoms; whereas the table salt which is formed only by sodium chloride (NaCl) molecules is a compound which is made up of pure elements. A pure substance cannot be further divided into its components.
A mixture is made up of different compounds and/or elements. It can be easily separated using any physical method. Example, sand, salt and saw dust mixed together as a mixture. Also, it will not have a definite chemical formula.
Please refer the attachment for better understanding.
Answer:
Is is talking about h20 water?
Explanation:
Answer:
I think the answer is 729 cubic millimeters.
Answer:
By producing identical cells.
Explanation:
Mitosis:
It is a cell division in which DNA of original cell duplicate and produce identical copies The two new cells are called daughter cells having same genetic code to parent nuclei.
Importance of mitosis:
Mitosis play very important role in both unicellular and multicellular organisms.
In unicellular organisms it help in asexual reproduction. It produces identical copies of parent cell. For example in amoeba mitosis help to produce its new individual through cell division.
In case of multicelluar organisms mitosis also play an important role.
Regeneration of injured tissues:
It helps to regenerate and repair the injured cells by producing identical cells.
Growth:
It helps in the growth by producing new cells.
Genetic stability:
In mitosis chromosomes splits and produce identical copies therefore daughter nuclei are identical to their parents. It helps to maintain the genetic stability.
