This sentence is grammatically correct.
Answer:
B is the answer.
Explanation:
<u>To compare: To make a comparison, usually showing similarities. For example.</u>
<em>A comparison between cats and dogs:</em>
- Cats have ears, so do dogs.
<em>A comparison between a laptop and a television:</em>
- Laptops have screens that display information, televisions also have screens that display information.
<u>To contrast: To show the difference between things. </u>
<em>A contrast between cats and dogs:</em>
- Cats meow, but dogs do not. Dogs bark, but cats do not.
<em>A contrast between a laptop and a television:</em>
- Laptops have keyboards, but televisions don't. Televisions prop up with a stand, and laptops have a clamshell design you can open and close.
So a compare and contrast essay would <u>point out the similarities in differences between 2 or more things</u>, or <em>comparing-</em>and-<em>contrasting</em> them.
Answer: The uses are as follows :D
1. Lithium: heat resistive ceramics, aircraft building, tritium production
2. sodium: coolant in nuclear reactors, soap making, street light manufacture (e.g. sodium vapor lamps)
3. Potassium: tanning of leather, manufacture of inks, making gunpowder
4. Rubidium: thermoelectric generator, making atomic clocks, working fluid in vapor turbines
5. Cesium: catalyst for hydrogenation of some organic compounds, vacuum tubes, photovoltaic cells
6. Francium: extremely radioactive and extremely rare so not used often
