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kkurt [141]
3 years ago
9

Which of the following is the best explanation for why finches on one of the islands in the Galapagos have large beaks while fin

ches on another island have small beaks?
a.
Over time, the finches on the island adapted as a result of competition for resources.
b.
Finches migrated until they found finches with similar beak sizes.
c.
Finches spontaneously changed their beak size in order to better access food supplies.
d.
Finches wit
Chemistry
1 answer:
swat323 years ago
6 0

Answer:

The correct answer is A)

Overtime, the finches on the island adapted as a result of competition for resources.

Explanation:

The finches beaks adapted to the food source which was favored by natural selection. The successful finches that had the most useful beak for their island survived and therefore reproduced.

Cheers!

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2ND ONE

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5. Forces (or actions) always come in pairs. They<br> are____and_____
azamat

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equal and opposite

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the formula of calcium oxide is CaO. What is the formula of the ionic compound containing calium abd sulfate ions
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5 0
2 years ago
Methylamine (ch3nh2) is a weakly basic compound. calculate the kb for methylamine if a 0.253 m solution is 4.07% ionized.
MariettaO [177]
Answer is: Kb for methylamine is 4.37·10⁻⁴.<span>
Chemical reaction: CH</span>₃NH₂ + H₂O → CH₃NH₃⁺ + OH⁻.
c(CH₃NH₂) = 0.253 M.
α = 4.07% ÷ 100% = 0.0407.
[CH₃NH₃⁺] = [OH⁻] = c(CH₃NH₂) · α.
[CH₃NH₃⁺] = [OH⁻] = 0.253 M · 0.0407.
[CH₃NH₃⁺] = [OH⁻] = 0.0103 M.
[CH₃NH₂] = 0.253 M - 0.0103 M.
[CH₃NH₂] = 0.2427 M.
Kb = [CH₃NH₃⁺] · [OH⁻] / [CH₃NH₂]. 
Kb = (0.0103 M)² / 0.2427 M.
Kb = 4.37·10⁻⁴.
8 0
2 years ago
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