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2 years ago

1.What is one cost and benefits of double window glazing?

Biology

1 answer:

Gnom [1K]2 years ago

8 0

Explanation:

1.Warmer in the winter – Double glazing is great for insulation, it can also help capture natural heat and store it in the winter. This is a great way of keeping your home insulated in the winter months.

Energy cost savings – Less energy is used up to heat or cool a room when double glazed windows are installed, this results in lower energy bills and money being saved. Adding more layers of glazing will increase the insulation levels and save more money.

Cooler in the summer – Double glazed windows can trap some of the rays coming through the windows on a hot summer’s’ day causing your room to be cooler. This means less air-conditioning is required.

Safety – With more units being on double glazed windows, the safety of your home increases. They are harder to break and are sealed tighter than other windows.

Less condensation – Double glazed windows reduce the amount of moisture on your window panes, as the airtight seal prevents the condensation from building up. Other windows often allow condensation to build up which causes window panes to have mould in.

Less noise – With more units comes less noise and a quieter home. If you live by busy roads or in a generally noisy area then double glazed windows are crucial to you

the second answer is photograph

mark me brainliest Please

thanks for asking

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The bases of RNA are the same as those of DNA except that RNA has _______.

Pavlova-9 [17]

RNA has Uracil instead of Thymine. All the other three bases also occurs in RNA, adenine, guanine and cytosine. Therefore a ATA DNA codon will be transcript to UAU by RNA. Both Thymine and Uracil have the same role in however have minor chemical differences.

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3 years ago

Investigator Benton uses several methods to analyze hair samples found at the crime scene. He examines the physical features of

Diano4ka-milaya [45]

Answer:

Medulla.

By analyzing the DNA extracted from the hair follicle, the medullary index and the pattern of medulla in the hair samples obtained from a crime scene, an investigator can identify the owner.

Explanation:

The hair consists of follicle and shaft. The follicle is the part of the skin, where the hair grows and the hair shaft has three layers: an inner medulla, a cortex, and an outer cuticle.

The morphology (physical characteristics) of hair provides a broad detail on the racial background of an individual and an investigator can identify a group of people who share similar traits. But the hair without follicle cells attached to it, cannot be used to identify a specific individual. If the follicle of a hair is present, then it can lead to individual identification by DNA analysis. Also the medulla of animals is larger than that in the humans. By comparing the medullary index (the ratio of the diameter of the medulla to the diameter of the entire hair), it can be determined if the hair obtained from crime scene belongs to animals or humans. The macroscopic (length, color, and curliness) and microscopic characteristics ( pattern of the medulla, pigmentation of the cortex, and types of scales on the cuticle) of the hair samples are studied during a crime investigation. If the entire hair follicle (follicular tag) is present in the hair samples found at the crime scene, the blood and tissue attached to the follicle is extracted and analyzed using DNA profiling. DNA analysis of the hair follicle provides an identification with greater accuracy than the hair shaft.

6 0

3 years ago

Which of the following describes an aquifer’s ability to allow water to flow through? Porosity,Permeability,Geology or Recharge

galben [10]

I miss freshman science classgood stuff but the correct answer is permeability the definition of permeability is how easily a membrane allows a liquid to pass through

8 0

3 years ago

Penicillin-binding protein 2a, encoded by the medA gene, isn’t affected by beta-lactam antibiotics.

Flauer [41]

Answer:

The correct answer is - false.

Explanation:

Penicillin-binding protein 2a or PBPs are protein produced by bacteria that binds with the β-lactam antibiotics such as penicillin. They play role in the cell wall synthesis of bacteria by producing peptidoglycan by catalyzing the reaction.

β-Lactam antibiotics bind with the PBPs and cause the disruption to peptidoglycan cross-linking in the biosynthesis of the cell wall and ultimately lysis of bacteria takes place and cell death.

7 0

2 years ago

In fruit flies, curved wings (w) are recessive to the dominant straight wings (W), and ebony body (b) is recessive to the domina

lara [203]

Answer:

The correct answer =

parents : WwBb x wwbb

offspring :

WwBb, Wwbb, wwBb, and wwbb

Explanation:

It is given that the straight wings (W) is dominant over curved wings (w) and the ebony body (b) is recessive to the dominant gray body (B) and there is a cross between curved wings and ebony body and straight wings and gray body is made. The phenotypic ratio is: 1:1:1:1 for the four different phenotypes straight gray, straight ebony, curved gray, curved ebony.

It is not given the genotype of parents, however, for the curved and ebony fly, it is clear that both alleles are recessive as recessive alleles only appear in absence of the dominant allele of the trait.

For another parent, the possible genotypes can be WWBB or WwBb, however in the case of WWBB the phenotypic ratio would not be equal therefore,

crossing WwBb x wwbb

This can be represented in the form of a punnett square as below:

wb wb wb wb

WB WwBb WwBb WwBb WwBb Straight wing, Gray body

Wb Wwbb Wwbb Wwbb Wwbb Straight wing, Ebony body

wB wwBb wwBb wwBb wwBb Curved wing, Gray body

wb wwbb wwbb wwbb wwbb Curved wing, Ebony Body

The phenotypic ratio is: 1:1:1:1 for the four different phenotypes

4 0

2 years ago