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Georgia [21]
3 years ago
9

Que nombre reciben las articulaciones oseas que unen la cavidad craneal

Biology
1 answer:
Gre4nikov [31]3 years ago
5 0
Las coyunturas 
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Almost all coal used today was produced during the Carboniferous period from dead animals in the swamps.
Ann [662]

Answer:

False

Explanation:

Almost all coal that is used today has its origins in the Carboniferous period. The Carboniferous period was a warm and wet one, with the majority of the land being swampy and covered with dense rainforests of ancient tree species. By the end of this period, the climate quickly changed, resulting int he collapse of the rainforests. As the trees were dying out, they were falling in the swamps, quickly being covered by the mud, so remaining largely preserved. Over time they got exposed to higher pressure and temperatures as they were getting deeper into the crust, eventually resulting in the formation of the coal.

7 0
3 years ago
Intrapleural pressure __________ during expiration.
san4es73 [151]
Intrapleural pressure is Negative during expiration. 

Intrapleural pressure is the air pressure in the pleural cavity and also exists between visceral and parietal pleurae. This pressure majorly depends on ventilation phase, the volume of the intrapleural cavity and atmospheric pressure. During expiration, the Intrapleural pressure in the pleural cavity becomes less negative which is commonly known as negative pressure.


4 0
4 years ago
If a population of 1,000 individuals has 160 rr genotypes, assuming simple dominance by the A allele, what is the frequency of t
OverLord2011 [107]
<span>Here square frequency of recessive alleles r^2 = 160/1000 = 0.16
   
Therefore r = 0.16
       
Since r + d = 1; d = 1-0.16 = 0.84</span>
8 0
4 years ago
Define exchange reaction
Romashka-Z-Leto [24]

An exchange reaction occurs between compounds that, when written as a molecular equation, appear to involve the exchange of parts between the two reactants. An exchange reaction will occur when ions in solution form insoluble products, weak electrolytes, or non electrolytes.

7 0
3 years ago
Read 2 more answers
Colored aleurone in the kernels of corn is due to the dominant allele R. The recessive allele r, when homozygous, produces color
abruzzese [7]

Answer: C. It was heterozygous for both genes.

Explanation: To produce a generation that has individuals with trait for colored aleurone in the kernels, the plant being analised has to have a dominant allele R. In the same way, to have offspring with the recessive trait, it has to carry the recessive allele r. So, the unknown plant has to be heterozygous for colored aleurone in the kernels, Rr.

The same thought can be applied to plant color: Since there are green and yellow plants, the unknown plant has to be heterozygous for that trait, Yy.

In conclusion, the unknown plant is heterozygous for both genes.

4 0
3 years ago
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