Answer: color, cleavage, clarity, durability, and crystal system
Explanation: color - distinctly green color that ranges between bluish green and slightly yellowish green.
cleavage - one direction of imperfect cleavage
clarity - almost every natural emerald has eye-visible characteristics that can be inclusions, surface-reaching fractures, or healed fractures. Treatments to fill the fractures with oils, waxes, polymers, flux and other materials to reduce their visibility has been common practice for hundreds of years.
durability - emerald is very hard, but almost all specimens have inclusions and surface-reaching fractures that compromise their durability
crystal system - hexagonal
Answer: a. Intervention study
Explanation:
In an interventional research study the participants receive an intervention as they are given a new item or commodity to use and the results of use are evaluated on the basis of change made by the commodity on the participant. Such studies are used for the purpose of clinical trails.
The given research design is the example of interventional study. As the margarine is a new commodity the ingredients of which are claimed to lower down the blood cholesterol levels which can tested by comparing the cholesterol levels in people.
I believe the answer is true
Answer:
I think because the people with more weight applies more friction to the ground and that causes the sole to worn out faster than the thin people
Explanation:
Saya tak tau sangat sebab saya baru tingkatan 2. I hope it really helps you
The answer is A and D. At first, they are confused with the structure. All they know is the DNA is consists of A, T, C and G. After they know the number relationship, they figure out that base may be pairs(A&T, G&C). Then the X-ray helps them to get the coiled helix structure.
