Eukaryotic<span>cells contain membrane-bound organelles, such as the nucleus, while </span>prokaryotic<span> cells do not.differences in cellular structure of </span>prokaryotes<span> and </span>eukaryotes<span> include the presence of mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA
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The spear is 4620 years old.
N=N0e^-kt
N0 = initial amount of C-14 (at time t = 0)
N = amount of C-14 at time t
t = time, in years
k = 0.0001
N/N0 = e^-kt
we know N/N0 is 0.63
so we have:
0.63 = e^-kt
we can take the ln of both sides, leaving us with:
ln0.63 = -kt
t = ln0.63 / -(0.0001)
t = 4620 years
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-keynerd23
Answer:
there are many Ways to reduce heat loss
1) Simple ways to reduce heat loss include fitting carpets, curtains and draught excluders. ...
2) Heat loss through windows can be reduced by using double glazing. ...
3) Heat loss through walls can be reduced using cavity wall insulation. ...
4) Heat loss through the roof can be reduced by laying loft insulation.
Explanation:
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Answer:
Half of Earth's water may have come from ancient asteroid collisions Asteroid samples returned to Earth in 2010 provide new evidence of an extraterrestrial origin for half the planet's water.
Explanation:
Answer:
The correct answer is Option A. polarity and good solvent.
Explanation:
Polarity is the property of water molecules to make poles. Poles are formed between two atoms having difference in electronegativity values. In water molecules, partial positive charge appears on hydrogen atom and partial negative charge appears on oxygen atom. Water is universal solvent which means it dissolves maximum number of solutes within itself.