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Liono4ka [1.6K]
3 years ago
11

Explain how the ozone hole was found and what the UN did to help it

Biology
1 answer:
Lemur [1.5K]3 years ago
3 0

The ozone hole over the Antarctic has begun to heal, according to a new study, more than 30 years after its discovery. ... The stratospheric ozone layer protects Earth from the sun's harmful ultraviolet (UV-B) rays, which can cause skin cancer and cataracts in humans, and physiological damage in animals and plants.

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What did edison learn from his attempts to see his first patented invention
Simora [160]
This invention was a commercial failure. Edison resolved that in the future he would only invent things that he was certain the public would want. ... This gave Edison the money he needed to set up his first small laboratory and manufacturing facility in Newark, New Jersey in 1871.

found at: https://www.nps.gov/edis/learn/historyculture/edison-biography.htm
8 0
3 years ago
his geologic era is known as the age of aquatic plants and animals. a. Precambrian b. Mesozoic c. Cenozoic d. Paleozoi
german

Answer:d.Paleozoic Era

Explanation:

Paleozoic Era is hallmarked by climate, animals & plants.

This Era includes the Ordovician Period, Silurian Period and the Devonian Period.

The Silurian Period is one during this era where aquatic plants and animals evolved.

5 0
3 years ago
Is it important to prevent Damage to the nerve cells
-Dominant- [34]

Yes, it's important to prevent damage to the nerve cells because if they were to get damaged you could get paralyzed. When your nerve cells are damaged the signals to move different parts of your body don't make it through to the muscles which leads to paralysis.

7 0
3 years ago
What happened when John Travoltage touched the door knob after rubbing his foot on the carpet?
Sholpan [36]

he was shocked by the static electricity he had accumulated.

7 0
3 years ago
Attached earlobes are recessive to free earlobes. What genotypic ratio is expected when an individual with attached earlobes mat
Marianna [84]

Answer:

C

Explanation:

This is a monohybrid cross between involving a gene coding for earlobe. The allele for free earlobe (F) is dominant over that of attached earlobe (f).

N.B: let F represent the gene involved.

A genotypic ratio is the ratio derived from the offsprings based on the actual genetic make-up and not based on their phenotypic appearance as in phenotypic ratio.

A homozygous individual is an individual having the same kind of alleles for a gene while a heterozygous individual is one that has two different alleles i.e. combination of the dominant and recessive allele.

The monohybrid cross is between an individual with attached earlobe (ff) i.e. homozygous recessive individual. (Note that, a recessive trait will only be expressed in a homozygous state) and a heterozygous free earlobeb individual (Ff). (See attached picture). Ff × ff

The resulting four offsprings will

be expected to have only two distinct genotypes i.e heterozygous (Ff) and homozygous recessive (ff) in an equal ratio i.e. 2:2 ~ 1:1

4 0
3 years ago
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