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Anastaziya [24]
2 years ago
15

1.Igneous rock is where new rock is formed from molten

Biology
1 answer:
Anon25 [30]2 years ago
6 0

Answer:

1. lava

2. crystals

3. rivers, deposition, weathering

4. heat and pressure

5. Sedimentary rocks

Explanation:

1. igneous rocks from from lava, hence, the name

2. magma forms crystals, so the process at which they melt alters the sizes

3. sedimentary rocks occur due to extreme pressure over time, such as weathering, or rain

4. heat and pressure for a long period of time can melt and from new rocks

5. Sedimentary rocks from from pieces of other rocks

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Which features do most stratovolcanoes and cinder cone volcanoes have in common?
Sergeu [11.5K]

Answer:

Option (2)

Explanation:

Strato-volcanoes are the steep, conical shaped, formed by the alternative beds of ash and lava. The magma in this type of volcano contains high silica content and are comprised of bubbles. When the gases are released from these bubbles, then a greater force is exerted from the bottom towards the surface. Due to this, they are very explosive and ejects a huge amount of materials during eruption. For example, Mount St. Helens .

Cinder cones are the simplest volcanoes with steep sides. They are made of the materials and semi solidified lava that are ejected from the vents of the volcano. Eruptions are often explosive due to the force exerted by the gas and the molten lava and are accumulated near the vent. For example, Paricutin.

<u>These two types of volcanoes are similar in terms of its eruption that is violent and explosive in nature. In addition to that, they both have steep sides. </u>

Hence, the correct answer is option (2).

5 0
2 years ago
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Penicillin is Choose one: A. produced by a mold and was discovered accidentally. B. a human-designed antibiotic, synthesized to
NeX [460]

Answer:

Option-A

Explanation:

Penicillin is an antibiotic drug that is derived from the fungal species of Penicillium molds especially the<em> Penicillium notatum</em>.  The penicillin acts by disrupting the formation of the cell wall and thus prevents the growth of the bacteria.

The discovery of penicillin was accidental when he was studying the petridish of staphylococcus and he found that due to avoidance while the experiment, molds grew in the petridish.  The area around the mold was clear and clear rings without the bacteria were easily observed. This lead to the discovery of the penicillin compound.

Thus, Option-A is the correct answer.

4 0
3 years ago
How do the air sacs of birds help make the body lighter
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They lower the average density of their body; because of the air it feels like a slight decrease in the weight.
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bezimeni [28]

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Brains cells have capability to detect the carbon concentration in blood and add excess amount of carbon from body to the air.  


8 0
2 years ago
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