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Veseljchak [2.6K]
3 years ago
14

Who invented bifocal eyeglasses and a clean-burning stove, and helped develop the U.S. postal system?

Biology
1 answer:
viva [34]3 years ago
4 0

Answer:

Benjamin Franklin

Explanation:

Benjamin Franklin was one of the founding fathers of America and he is well known for his many inventions as well. All the mentioned inventions were invented by him along with his contribution towards development of U.S Postal system.

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How our brain changes duriang the whole life?
grigory [225]
The resin why our brain changes throughout our life time as human beings, is simply because of age. Whatever you might learn, or adapt to it will all effect the brain. Everything you do is what your brain makes you do, and it changes with everything you do it all has a huge impact on your brain. Everything, its all about age and time. Hope this was helpful !!
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3 years ago
Damage to your somatic nervous system affects voluntary signaling. which muscles would be affected?
SSSSS [86.1K]
<span>The somatic nervous system is known as the voluntary nervous system, is a part of the peripheral nervous system. It consists of neurons that are associated with skeletal or striated muscle fibers. It affects voluntary signaling for many resion. A large part of the PNS is composed of 12 pairs of cranial nerves and 31 pairs of spinal nerves.</span>
6 0
3 years ago
Two short-haired guinea pigs are mated several times. Out of 100 offspring, 25 of them have long hair. What are the probable gen
Alekssandra [29.7K]

Answer:

Ss (male) × Ss (female)

Explanation:

This question involves a single gene coding for hair length in guinea pigs. Based on the information in this question, the allele for short hair (S) is dominant over the allele for long hair (s). This means that a guinea pig will only be phenotypically long-haired if the genotype is "ss".

According to this question, Two short-haired guinea pigs are mated several times. Out of the 100 offsprings produced by this cross, 25 of them have long hair (recessive). This means that the phenotypic ratio of this cross is 3 short hair : 1 long hair i.e. 100 - 25 = 75 short hair. 75/25 = 3/1 = 3:1

To produce this phenotypic ratio, the parents must both be heterozygous (Ss) for the hair length gene.

3 0
3 years ago
Sally was exposed to hepatitis. Her doctor gave her an injection containing
expeople1 [14]

Answer:

The correct answer is - passive immunity - artificially acquired.

Explanation:

Passive immunity is the immunity that involves giving or acquiring antibodies from other sources instead of developing them on one's own. This type of immunity can be natural and artificial. Mother breastfeed the babies, is the natural passive immunity example as milk also contain antibodies required for immunity of babies.

Artificial passive immunity is the immunity that comes from injecting the antibodies created in different animals or persons which called antiserum or vaccines such as snake antivenom.

5 0
2 years ago
The process that enables cells of the body to burn food and release energy is called
serg [7]

...respiration!

Respiration is the biochemical process in which the cells of an organism obtain energy by combining oxygen and glucose, resulting in the release of carbon dioxide, water, and ATP (the currency of energy in cells). Source: https://study.com/academy/lesson/what-is-respiration-definition-process-equation.html

I hope that helps! :)

4 0
2 years ago
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