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9966 [12]
3 years ago
5

Evidence in the fossil record points to

Chemistry
2 answers:
pishuonlain [190]3 years ago
6 0
The Permian-Triassic extinction event<span> about 250 million years ago was the deadliest: More than 90 percent of all species perished. Many scientists believe an asteroid or comet triggered the massive die-off, but, again, no crater has been found. Another strong contender is flood volcanism from the Siberian Traps, a large igneous province in Russia. Impact-triggered volcanism is yet another possibility.</span>
Nat2105 [25]3 years ago
4 0

Evidence in the fossil record points to  (________)major asteroid impacts that have caused mass extinctions in which 50%–96% of life on Earth died out


It is 5.

Points to __5___ major asteroid impacts

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Tool<br>what is the function of axe?:)<br>science:)​
Orlov [11]

Answer:

to cut wood?

Explanation:

so wood get smaller

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3 years ago
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What are the substances making up a mixture called
dimulka [17.4K]

  • The substance that made up of a particular mixture can be regarded as Solute and solvent

  • A  mixture can be regarded as material which is made up of  more than one  different Chemical substance or substances , whereby they  are not chemically combined.

  • Substance could be any matter such as <em>salt, rice, and or compounds</em>

  • A mixture can be regarded as physical combination involving two or more substances whereby each entities identities are retained, then mixed in the form such as ;
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  2. <em> suspensions </em>
  3. <em> colloids</em>.

  • A mixture could be  in this form <em>(Solute + solvent = solution)</em>

Therefore, the substance that made up of a particular mixture can be regarded as <em>Solute and solvent</em>

Learn more at: brainly.com/question/18569341

7 0
3 years ago
How did Albert Einstein change Niels Bohr's picture of the atom?
Virty [35]

Answer:

He showed that by absorbing a discrete quantum of energy, an electron can jump from one orbit to another. ... In spite of his contributions to the Bohr model of the atom, Einstein remained deeply troubled by the notion that atoms seemed to emit photons at random when their electrons change orbits.

Explanation:

7 0
3 years ago
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Select the correct formula for the polyatomic ion.
Helga [31]
The poly atomic ion formula for ammonium would be NH4+
7 0
4 years ago
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How many joules are required to heat 2 l of water in a pot from 20 ◦c to the boiling point of water? the specific heat of water
miss Akunina [59]
  The  joules  required  to   heat 2L  of  water  in  a  pot  from  20  c  to  the  boiling  point  of  water  is  calculated     using the following  formula

  Q=    MC  delta  T
M  = mass  =   density  x   volume(  2  x 1000= 2000ml)
M  =     1g/ml  x2000  ml  =  2000g
C  =  specific  heat   capacity =  4.18  g/c
delta  T  =  change  in  temperature  =  100 c (  boiling  point  of  water)   -  20 c =  80 c 
Q  is therefore  =   2000 g x 4.18 j/g c  x  80c  =  668800j
 


4 0
3 years ago
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