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oee [108]
3 years ago
11

What evidence shows that white dwarfs must be very small?

Biology
1 answer:
Drupady [299]3 years ago
7 0

Spectral analysis proposes that there is no hydrogen fusion roughly speaking. They are hot since they are very thick. So if you are a convinced high density and temperature and still not doing synthesis, you must be small. Also, stellar evolution models are founded on the observation of planetary nebulae, where stars have shed most of their mass after being red giants. The physics designates a small, hot, central remainder. 

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The estimated heritability of 48 percent for neuroticism in the population supports the claim that Group of answer choices the p
mamaluj [8]

Answer:

the variability in neuroticism is due partly to genetic variability in the population.

Explanation:  

In population genetics, heritability (h) is defined as the amount of the phenotypic variation attributable to genetic factors rather than environmental factors.

Mathematically, h is calculated by using the following equation: H2 = Vg/Vp, where Vg is the variation in genotype, while Vp is the variation in phenotype.

An H value close to zero (0) indicates a very low heritability (i.e., the phenotype depends on the environmental differences between individuals), while an H close to one (1) indicates very high heritability (i.e., the phenotype is firstly dependent on genetic factors).

3 0
3 years ago
The reason that the mail bed appears pink is the presence of a larger number of melanocytes in the underlying dermis
Ilia_Sergeevich [38]

Complete question:

True or False: The reason that the nail bed appears pink is the presence of a larger number of melanocytes in the underlying dermis.

Answer:

False

Explanation:

Nails are composed of the lamina, which is a smooth, shiny, translucent, and keratinized structure. The nails are born the nail matrix. The newly formed nail slice along the mail bed, which is the plane surface under the nails.  

The nail bed places under the nail and is composed of a thin epithelium, with no granulous stratum, and a few layers of parakeratotic cells attached to the nail.  

The nail matrix and nail bed have melanocytes. Half of the melanocytes of the matrix produce melanin, while melanocytes of the nail bed are inactive.  

The nail bed is laying over many small vessels that nourish it and provides a pink color to the nails.

6 0
3 years ago
An example of a type of bacteria which is an autotroph is ________
d1i1m1o1n [39]

Answer:

Algae

Explanation:

4 0
3 years ago
What is sustainability? How does the concept of sustainability relate to green energy?
klemol [59]
Conceptually, one can define three generations of renewables technologies, reaching back more than 100 years .
First-generation technologies emerged from the industrial revolution at the end of the 19th century and include hydropower, biomass combustion and geothermal power and heat. Some of these technologies are still in widespread use.
Second-generation technologies include solar heating and cooling, wind power, modern forms of bioenergy and solar photovoltaics. These are now entering markets as a result of research, development and demonstration (RD&D) investments since the 1980s. The initial investment was prompted by energy security concerns linked to the oil crises (1973 and 1979) of the 1970s but the continuing appeal of these renewables is due, at least in part, to environmental benefits. Many of the technologies reflect significant advancements in materials.
Third-generation technologies are still under development and include advanced biomass gasification, biorefinery technologies, concentrating solar thermal power, hot dry rock geothermal energy and ocean energy. Advances in nanotechnology may also play a major role.
6 0
4 years ago
Read 2 more answers
Landscape in which limestone is eroded to form deep valleys and caverns
irina [24]
The landscape in which limestone is eroded to form deep valleys and cavers are called Karst landscape or karst topography. This kind of development start occuring whenever the acidic water starts breaking down the bedrocks near the cracks. As the bedrock starts breaking down slowly, the cracks start to open up creating bigger holes. with passage of time the holes will become big enough to create an underground drainage system for the surface water to flow and form underneath. If the water is unable to flow out and becomes stagnant, then the Karst will start getting bigger. 
5 0
3 years ago
Read 2 more answers
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