Its a little confusing but i think that since u need help here it is
3/2 7/4 15/8 16/9 2
Explanation:
During metamorphism, pressure and temperature, a times fluids causes the mineral composition and texture of a parent rock to change.
Texture is the arrangement and orientation of mineral grains in a rock.
- Rocks that are made up of single mineral phase rarely undergo compositional changes.
- Rocks like quartz sandstone and limestone do not change minerals.
- In limestone, the mineral calcite is dominant. Since there are no other minerals to combine with, it's composition does not change.
- But a metamorposed limestone undergoes changes in texture.
- The searing heat and pressure causes the grains to recrystallized, they interlock to form a granular pattern.
Learn more:
Metamorphic changes brainly.com/question/869769
#learnwithBrainly
Answer:
I believe it's <em>size</em>
Answer:
Option-A
Explanation:
Penicillin is an antibiotic drug that is derived from the fungal species of Penicillium molds especially the<em> Penicillium notatum</em>. The penicillin acts by disrupting the formation of the cell wall and thus prevents the growth of the bacteria.
The discovery of penicillin was accidental when he was studying the petridish of staphylococcus and he found that due to avoidance while the experiment, molds grew in the petridish. The area around the mold was clear and clear rings without the bacteria were easily observed. This lead to the discovery of the penicillin compound.
Thus, Option-A is the correct answer.