Basically all a vaccine is would be cells from the virus that is injected into you but the catch is the virus has been altered to prepare your immune system for what is to come if you catch the original virus so the correct answer would be C hope this is helpful for you.
Answer;
-All the above
- the reduction or elimination of pore space in soil
- the weight of heavy machinery on soil
- livestock walking over soil
Explanation;
-Soil compaction is a process in which the soil, which is consisted of air and water particles, is reduced to some extent by applying weight. This process involves removing air from the soil particles without any significant change in the amount of water consisted in the soil.
-It is very important because it provides the necessary flat base which provides the crucial support for the buildings, various construction foundations, roads, pavements and any other construction structures.The process of compaction gives the soil higher resistance and greater stability.
When you are a baby you have 300 bones and when you're a adult you have 200 bones. hoped this helped!!!:-)
Answer:
hey you!
Explanation:
Quartzite
Quartzite is a metamorphic rock formed when quartz-rich sandstone or chert has been exposed to high temperatures and pressures. Such conditions fuse the quartz grains together forming a dense, hard, equigranular rock. The name quartzite implies not only a high degree of induration (hardness), but also a high quartz content. Quartzite generally comprises greater than 90% percent quartz, and some examples, containing up to 99% quartz, and are the largest and purest concentrations of silica in the Earth's crust. Although a quartz-rich sandstone can look similar to quartzite, a fresh broken surface of quartzite will show breakage across quartz grains, whereas the sandstone will break around quartz grains. Quartzite also tends to have a sugary appearance and glassy lustre. The variety of colours displayed by quartzite are a consequence of minor amounts of impurities being incorporated with the quartz during metamorphism. Although quartzite can sometimes appear superficially similar to marble, a piece of quartzite will not be able to be scratched by a metal blade, and quartzite will not fizz on contact with dilute hydrochloric acid.
Texture - granular.
Grain size - medium grained; can see interlocking quartz crystals with the naked eye.
Hardness - hard.
Colour - variable - pure quartzite is white but quartzite exists in a wide variety of colours.
Mineralogy - quartz.
Other features - generally gritty to touch.
Uses - pure quartzite is a source of silica for metallurgical purposes, and for the manufacture of brick; as aggregate in the construction and roading industries; as armour rock for sea walls; dimension stone for building facings, paving etc.
New Zealand occurrences - northwest Nelson (Aorere).
