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Leni [432]
3 years ago
15

According to the fossil record found in these sedimentary layers, what conclusion can be drawn about the movement of life to lan

d?
A) Land plants and mammals evolved at the same time.
B) As land plants became more complex, animal life did as well.
C) Mammals and insects evolved at about the same time in Earth;s history.
D) Flowering plants and trees became established before animals moved to land.
Chemistry
2 answers:
larisa [96]3 years ago
6 0

Answer:

B

Explanation:

I took the USA test prep

Andrei [34K]3 years ago
4 0

<em>A conclusion that can be drawn about the movement of life to land is that;</em>

B.) As land plants became more complex, animal life did as well.

<u>The plants have also adapted to reduce the water loss across cell walls. This is made possible by waxy cuticles.</u>

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Answer:

C. anything that has mass and takes up space

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If I have 31 liters of helium in a balloon at 9°C and increase the temperature of the balloon to 28°C, what will the new volume
Ede4ka [16]

Answer: The new volume of the balloon is 33 liters while T2 is 301K

Explanation:

Initial volume of helium V1 = 31 liters

Initial temperature T1 = 9°C

Convert temperature in Celsius to Kelvin

( 9°C + 273°C = 280K)

Final temperature T2 = 28°C

( 28°C + 273°C = 301K)

Final volume V2 = ?

According to Charle's law, the volume of a fixed mass of a gas is directly proportional to the temperature.

Mathematically, Charles' Law is expressed as: V1/T1 = V2/T2

31/280 = V2/301

To get the value of V2, cross multiply

V2 = (31 x 301) / 280

V2 = 9331 / 280

V2 = 33.325 liters (approximated to 33liters)

Thus, the new volume of the balloon is 33 liters while T2 is 301K

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4 years ago
The number of covalent bonds that an
amm1812

Answer: please make the question more understandable

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3 years ago
If the temperature of the earth's layers increases by about 90 degrees fahrenheit for every 1 mile from the surface and you are
bogdanovich [222]
The rate of change of the temperature of the Earth's surface is given to,
                                       90°F/mile
To determine the temperature x miles away from the surface, we multiply the depth by the given rate. This will give us the answer of,
                                  T = (90°F/mile)(90 mile)
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Thus, the temperature 90 miles deep in the Earth's surface is equal to 8100°F. 
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3 years ago
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Travka [436]

Explanation:

The total mass of the product will also be 20g because in chemical reactions, mass is always conserved.

According to the law of conservation of mass "the law states that matter can neither be created nor destroyed but changed from one form to another in a chemical reaction".

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  • So, the mass is the same in both directions.
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3 years ago
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