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Pepsi [2]
3 years ago
5

How did the skeleton change during bird evolution?

Biology
1 answer:
Bingel [31]3 years ago
7 0

Answer:

reduction in birds skeleton

Explanation:

The reduction in a bird's skeletal weight is largely a result of hollow construction of the skeleton. The fusion or loss of individual bones reduces the number of movable joints in the bird's skeleton, making it rigid and better adapted as the internal framework of a flying machine.

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Use the format to show the Punnett square
Soloha48 [4]

Answer:

The genotype of the parents are not given. Let's try to answer this question generally. Let's assume the genotype of both parents to be Bb as genotype is not given.

Explanation:

       B        b

B    BB      Bb

b     Bb      bb

There is a 25% chance that the offspring will have BB genotype.

There is a 50% chance that the offspring will have Bb genotype.

There is a 25% chance that the offspring will have bb genotype.

There is a 75% chance that the offspring will have a dominant trait.

There is a 25% chance that the offspring will have recessive trait.

Phenotypic ratio will be 3:1

8 0
2 years ago
Human activity, such as the burning of coal and oil, refining petroleum in factories has impacted which of the following
Zarrin [17]

Answer:

carbon cycle

Explanation:

Carbon is an essential element in the bodies of living organisms. It is also economically important to modern humans, in the form of fossil fuels.

Carbon dioxide—\text {CO}_2CO  

2

​  

start text, C, O, end text, start subscript, 2, end subscript—from the atmosphere is taken up by photosynthetic organisms and used to make organic molecules, which travel through food chains. In the end, the carbon atoms are released as \text {CO}_2CO  

2

​  

start text, C, O, end text, start subscript, 2, end subscript in respiration.

Slow geological processes, including the formation of sedimentary rock and fossil fuels, contribute to the carbon cycle over long timescales.

Some human activities, such as burning of fossil fuels and deforestation, increase atmospheric \text{CO}_2CO  

2

​  

start text, C, O, end text, start subscript, 2, end subscript and affect Earth's climate and oceans.

4 0
3 years ago
Read 2 more answers
How does San Diego’s proximity to water impact temperature?
Lilit [14]
It affect the water flow and how much of the water turns into gas
3 0
3 years ago
The endomembrane system includes ________. ribosomes, lysosomes, vacuoles, and the endoplasmic reticulum Golgi apparatus, nucleo
bearhunter [10]

Answer:

The endomembrane system includes Golgi apparatus, lysosomes, ribosomes, and the endoplasmic reticulum.

Explanation:

The endomembrane system has some very important function, but mostly it's on a charge of the internal transportation of "things" inside the cell. The system not only transports proteins or RNA or lipids, but it also transports what the cell no longer needs (waste). It starts with the endoplasmic reticulum close to the nucleus, where ribosomes are attached, so it receives molecules from inside the nucleus and also as proteins are synthesized in the ribosomes, therefore it also transports them to the next step which is the Golgi apparatus. The Golgi wraps molecules in a lipid layer and then they are taken to their final destination. Finally, lysosomes process big molecules and take them to a place in the endomembrane system so it can be treated as said before.

4 0
3 years ago
In what phase does crossing over occur?
velikii [3]

Answer: prophase

Explanation:

5 0
3 years ago
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