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barxatty [35]
3 years ago
15

9)

Biology
1 answer:
Sergeu [11.5K]3 years ago
4 0

Answer:

The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not.                               So i would think that it is A

Explanation:

Hope this helps!

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All sources of pollution come from human activities. please select the best answer from the choices provided t f
padilas [110]

False.

All sources of pollution do not come from human activities.

<h3>What are the causes of pollution?</h3>

There are some natural causes of pollution. When dangerous pollutants enter the air as gases, liquids, or solids, air pollution is formed. Although there are some natural processes that can produce air pollution, such as sulfur and chlorine gases from volcanic activity, smoke and ash from wildfires, dust storms, and biological degradation, manmade sources account for the majority of pollution in the atmosphere.

Burning fossil fuels for transportation, energy, and industry produces the majority of air pollution that is caused by humans. Carbon dioxide, nitrogen oxides, sulfur dioxide, volatile organic compounds (VOCs), and particulates are typical pollutants released by fossil fuel-burning engines. In addition to particles, carbon monoxide and carbon dioxide are produced by stoves, incinerators, and open burning.

Learn more about causes of pollution here:

brainly.com/question/8141448

#SPJ4

4 0
1 year ago
What ocean zone lies over the continental shelf?
Angelina_Jolie [31]
The intertidal zone lies above the continental shelf
3 0
3 years ago
A child has the same number of chromosomes as each of his parents. This is because the gametes that combined when that child was
RUDIKE [14]

Answer:

When a child is conceived each parent gives 23 of their chromosomes

6 0
3 years ago
A rare genetic disease which is due to a recessive allele (a) and that is lethal when homozygous, occurs within a specific popul
valkas [14]

Answer:

40 individuals

Explanation:

The homozygous recessive percentage is equal to q2.

Recessive genotype frequency, q 2 is 1/1000000  = 0.000001  

therefore, q = \sqrt{q2}  = \sqrt{0.000001 }  = 0.001 =  allele "a" frequency  

and p + q = 1, thus, p = 1 – q = 1 – 0.001 = 0.999  

thus, the frequency of allele a = q = 0.001  and the frequency of allele A = p = 0.999

Carriers are heterozygous and are equal to 2pq.  

So, 2pq = 2  x 0.999 x 0.001 x  20,000 = 39.96 (round of to 40)

Hence, 40 individuals will be expected to carry the recessive allele.

5 0
3 years ago
Which diagram shows the correct number of valence electrons for a carbon atom
kap26 [50]
There Are 4 Valence Electrons So do the one with 4 valence electrons
4 0
3 years ago
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