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SOVA2 [1]
3 years ago
9

Why is it so important to avoid pollution of freshwater ecosystems? A. Freshwater ecosystems contain more species than marine ec

osystems contain. B. Freshwater ecosystems are the source of most of our drinking water. C. There are more freshwater ecosystems than there are marine ecosystems. D. Freshwater organisms are more important than marine organisms are.
Physics
2 answers:
Mrrafil [7]3 years ago
5 0

The answer is B because it literally says it right there, and I don't wanna make it impossibly confusing for a middle school student, lol.

makkiz [27]3 years ago
3 0

it is b!!!!!!!!!!!!!!!!!!!!!!

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___________ is the rising of a body of water and its overflowing onto normally dry land.
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Answer:

Flooding

Explanation:

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2 years ago
Your car's 30.0 W headlight and 2.50 kW starter are ordinarily connected in parallel in a 12.0 V system. What power (in W) would
Tatiana [17]

Answer:

<h3>The power of headlight in series connection is 29.64 W</h3>

Explanation:

Given :

Power of headlight P_{1} = 30 W

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 P = \frac{V^{2} }{R}

 R = \frac{V^{2} }{P}

For finding the resistance of headlight and starter,

⇒ For headlight,

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⇒ For starter,

R_{2} = \frac{144}{2500} = 0.057 Ω

Since equivalent resistance,

R_{eq} = R_{1} + R_{2} + ........

R_{eq} = 4.8 +0.057 = 4.857 Ω

So power in series is given by,

 P_{s } = \frac{V^{2} }{R_{eq} }  = \frac{144}{4.857}

 P_{s } = 29.64 W

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