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3 years ago

True or false. When populations do not exceed their environment carrying capacity biology communities are stable?

2 answers:

4 0

Answer:
True

Explanation:
Biology communities are stable when populations do not exceed their environments carrying capacity. Their communities are also stable when the resources for survival are sustained.

mars1129 [50]3 years ago

4 0

Answer:

True

Explanation:

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Which statements describe the image produced by a concave lens?check all that apply.

kotegsom [21]

Answer:

The answers are:

A-which is the image is always right side up.

E-the image is virtual

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4 years ago

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yulyashka [42]

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3 years ago

Large amplitude of sound vibrations will produce.....

user100 [1]

Answer:

louder sound.

Explanation:

The amplitude of a sound wave determines its loudness or volume. A larger amplitude means a louder sound

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4 years ago

Which mixtures could be separated using evaporation? Check all that apply. fat in milk salt in ocean water mud in pond water but

salantis [7]

I would go with salt in ocean water as when you heat it and the water begins to evaporate it will leave the salt behind

Also water in mud as the water would evaporate and leave the mud residue behind

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4 years ago

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When a potential difference of 10 V is placed across a certain solid cylindrical resistor, the current through it is 2 A. If the

Keith_Richards [23]

Answer:

New Resistance = 0.5556 ohm

Explanation:

Resistance = resistivity * length /area

Here since resistivity and length are constant, we only need to see how the resistance increases or decreases with change in area.

New Area = pi * (3*D)^2 / 4

Old Area = pi * D^2 / 4

The ratio of new area / old area is :

$\frac{New Area}{Old Area} = 9$

Since area increases 9 times, and it is inversely proportional to resistance:

Resistance decreases by 9 times.

So, old resistance = Voltage / Current = 10 / 2 = 5 ohm

New Resistance = 5 / 9 = 0.5556 ohm (decreases by 9 times)

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3 years ago