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4 years ago

Darwin’s finches evolved on an island. What is the main reason that islands often provide good examples of evolution?

Biology

1 answer:

Nuetrik [128]4 years ago

8 0

They all used to be the same finch, but they evolved into to different kinds to help them survive.

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What does the destruction of the amazon forest threaten the whole world

Mariana [72]

A that’s the answer as you know forest increase the level of oxigeno and decrease the level of carbon dioxide

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3 years ago

Floods are disturbances which cause high amounts of water which generally have strong pulls. When a forest floods an ecosystem a

nevsk [136]

Answer:

decreased biodiversity and increased sustainability for the forest.

8 0

3 years ago

Number 6 please help!

SVEN [57.7K]

I'd have to say either 1 or 3. I would choose number 3.

8 0

3 years ago

On a certain day, Donnie observes the wind is blowing at 2 miles per hour. A bird nesting near Donnie's house flies three quarte

kipiarov [429]

Answer:

Air speed of bird is $4.17$ mph

Explanation:

let the speed of the bird in still air be "X"

Speed of the bird when it flies in the direction of flow of wind $= X+2$

Speed of the bird when it flies in the opposite direction of flow of wind $= X-2$

The total time taken is equal to $12$ minutes

$= \frac{12}{60} \\= \frac{1}{5}$ hours

The distance in miles is equal to $\frac{3}{4}$ $= 0.75$ miles

$\frac{0.75}{X+2} + \frac{0.75}{X-2} = \frac{1}{5}$

On solving the above equation, we get -

$2 X = (X^2 -4)*\frac{1}{0.75 *5} \\X^2 -4 -0.75 X =0\\X = 4.17$

Air speed of bird is $4.17$ mph

3 0

4 years ago

What is the correct procedure to put away a light microscope?

Ostrovityanka [42]

Answer:

You should always put the low power objective lens into the center place.

Explanation:

Always cover the microscope with the supplied dust cover when not in use.
Store in a dry place.
In humid or moist environments, it is advisable to store the microscope in a waterproof container with a drying agent.
Do not touch the optical lens with bare fingers.
Do not store the microscope in direct sunlight.

4 0

3 years ago