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Ainat [17]
3 years ago
11

What evidence would support Maria's claim that the fossilized remains are that of a bird, class Aves, instead of a turtle, class

Reptilia? A) the eggs B) a backbone C) a keeled sternum D) warm-bloodedness
Chemistry
2 answers:
lora16 [44]3 years ago
6 0

Your answer would be C.

Ulleksa [173]3 years ago
3 0

Answer:

The correct answer is option c, that is, keeled sternum.

Explanation:

In the given question, there is a need to access the skeleton or the fossilized remains of the species. The turtles possess bony, tough shells that safeguard their body. It exhibits a domed top (carapace) and a flat layer underneath the belly (plastron). The backbones of the turtles are amalgamated with the bones in their shells.  

While, the birds exhibit a lightweight skeleton, which is formed majorly of thin and hollow bones. If the skeleton possesses a breastbone, or the keeled sternum, then what they have found is most probably the nest of the bird.  

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<h3>A. </h3>

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7 0
2 years ago
A sample of carbon -12 has a mass of 6.00 g. How many atoms of carbon -12 are in the sample ?
nevsk [136]

Answer:

3.02e23

Explanation:

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your sample, 6 g / 12 g/mol = 0.5 mol

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3 0
3 years ago
As the temperature of a gas increases, _____. (select all the options that correctly complete the sentence.)
weeeeeb [17]

As the temperature of a gas increases, the average kinetic energy of the gas particles increases and the average speed of a gas particle increases.

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Kinetic energy is proportional to the speed of the molecules. As the speed of the colliding molecules increases, so does the total kinetic energy of all the gas molecules. It's pretty difficult to measure the speed of an individual gas molecule.

Instead, temperature can be used as a measure of the average kinetic energy of all the molecules in the gas. As the gas molecules gain energy and move faster, the temperature goes up. This is why Amy feels warmer!

To determine the average kinetic energy of gas molecules, we need to know the temperature of the gas, the universal gas constant (R), and Avogadro's number (NA).

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5 0
2 years ago
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1 year ago
Explain what happens to the average kinetic energy thermal energy and temperature of a substance when the particles in the subst
kkurt [141]
The average kinetic energy and thermal energy decreases, and the temperature decreases as well.
8 0
3 years ago
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