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Grace [21]
3 years ago
11

The diagram below shows a portion of the geologic time scale.

Biology
2 answers:
Artist 52 [7]3 years ago
6 0

Answer:

microscopic life appeared on Earth before flowering plants

Explanation:

Gala2k [10]3 years ago
3 0
The answer is microscopic life appeared on Earth before flowering plants. This is because according to the label on the second box, microscopic life appeared 4.0 to 3.5 billion years ago, and this is way before the date 250 to 120 millions years ago indicated on the label on the sixth box the flowering plants appeared on Earth.
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Reasons why a transport system is necessary in higher animals?​
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Explanation:

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7 0
2 years ago
Ionic compounds form ions in water.<br> True?<br> False?
krok68 [10]

Answer:

True

Explanation:

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4 0
3 years ago
Identify each event as the result of mechanical weathering or chemical weathering.
kow [346]

<h3><u>The following events are identified as chemical weathering:</u></h3>
  • The minerals in a marble statue react with water to form acids and pores in the structure.
  • The rocks in a region are streaked orange after being exposed to repeated rains.

<em><u>Reason: </u></em>

When the weathering process occurs due to <em>chemical reaction</em>, then it is considered as chemical weathering.

In <em>the first case</em>, minerals of marble statue are <em>reacting</em> with water to cause weathering. In the <em>second case</em>, due to the <em>acidificaion reaction</em>, the change of the color has happened after exposure to the repeated rains.

<h3><u>The following events are identified as Mechanical weathering:</u></h3>
  • A piece of rock crumbles after being constantly thrashed by strong waves.
  • Industrial runoff forms cracks in a rocky structure in its path.

<em><u>Reason:</u></em>

When the rock is broken into simple pieces <em>without any chemical reaction </em>it is considered as mechanical weathering.

In the <em>first cause</em>, due to the <em>abrasion</em> caused by the strong waves, weathering has happened, in the <em>second case</em> industrial run off may be of varying temperature and thus may cause <em>heating or cooling</em> of the rock and causes weathering.

8 0
3 years ago
Why are eukaryotic cells more complex than prokaryotic cells?
Zielflug [23.3K]

Answer:

eukaryotic cells have true nucleus that's why it's more complex.Prokaryotic cells have false nucleus

Explanation:

3 0
3 years ago
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