3 years ago

There are 20 mice in a 5 m2 field ecosystem. The population density of mice is _____. 4 per m2 5 per m2 20 per m2 25 per m2

1 answer:

3 0

Answer: 4 per m2

To find out the population density of a certain species, you must divide the number of organisms living in that habitat over how big the area is. In this case, because there are 20 mice in an ecosystem that is 5 square-meters big, then there would be 4 mice in every square-meter.

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A river current has a velocity of 5 km/h relative to the shore, and a boat moves in the same direction as the current at 5 km/h

Vedmedyk [2.9K]

Answer:

D. By adding the vectors

$V = 10km/h$

Explanation:

Given

Represent the velocity of the river current as VR

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Required

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From the question, we understand that both move in the same direction.

So, the relative velocity V is calculated as:

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Notice that the both velocities are added together to get the relative velocities.

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Answer:

The answer is C progressive

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Explanation:

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10 months ago

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Answer:

well basically think about it:

Explanation:

over the years North Koreahas been over the world's most totalitarian state. just like Cuba, North Korea has an almost entirely state-controlled economy, with similar social programs to those of Cuba. but there is no stock exchange in North Korea either.

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