Answer:
D
Explanation:
Vitamin C is one of the vitamins that humans can't produce in their liver. They need this vitamin from the external environment in the form of food. About 75- 90mg/day is it's the normal dosage. So, option D is correct.
A lack of genitic diversity would pose a issue
Epithelial tissue <span>covers the body surface and forms the lining for most internal cavities. </span>
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
According to finding of scientist, the earth is roughly 4,600 million years old. then the non abundant fossil that they dated was about 3,600 million years old. so the fraction or percent of <span>geologic time is :
3,600 / 4600 = 0.78 or 78 % of earth geologic time</span>