1. bromine is a a. black solid b. red liquid c. colourless gas d. highly inflammable gas 2. the hardest substance available on earth is a. gold b. iron c. diamond d. platinum 3. the variety of coal in which the deposit contains recognisable traces of the original plant material is a. bitumen b. anthracite c. lignite d. peat 4. tetraethyl lead is used as a. pain killer b. fire extinguisher c. mosquito repellent d. petrol additive 5. which of the following is used as a lubricant? a. graphite b. silica c. iron oxide d. diamond

1.  B.  red liquid

2. C.  diamond

3.  D.  peat

4.  D.  petrol additive

5.  D.  diamond

Explanation:

1.B

2.C

3.D

4.D

5.A

cytokinesis is the splitting of a cell membrane to form 2 identical daughter cells. it's similar to mitosis as both cells have identical copies of dna and cytokinesis is a step in the mitotic cycle.

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.