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stiks02 [169]
4 years ago
6

In the past, typhus and other diseases were more common in cities because _____.

Biology
2 answers:
leonid [27]4 years ago
8 0
Of poor water hygiene and management  
OlgaM077 [116]4 years ago
6 0
There was no cure so people would get the diseases, not be able to cure it, and it would spread
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A marble tile would feel cold as compared to a wooden tile on a winter morning, because the marble tile
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Is a poor conductor of heat than the wooden tile
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3 years ago
Why is an array, or group, of hydrophones more useful than a single hydrophones?
anzhelika [568]

A hydrophone array is made up of a number of hydrophones placed in known locations. These hydrophones maybe placed in a line on the seafloor, moored in a vertical line in the water column, or towed in a horizontal line behind a boat or ship, for example. Sound arriving at the array from a distant source, such as a submarine, will reach each hydrophone at slightly different times, depending on the direction from which the sound is coming. This time difference is known as the time-of-arrival-difference and can be turned into a direction. Using this information from all the hydrophones in the array, the direction from which the sound is coming can be pinpointed.


Even a simple array consisting of only two hydrophones can give the approximate direction from which a sound is coming. People do this all the time in air with a “receiving array” that consists of two ears. Sound arriving from a source, such as a person speaking, will reach each ear at slightly different times, depending on the direction from which the sound is coming, making it possible for the listener to tell the direction to the speaker.

4 0
4 years ago
Red flowered snapdragons are crossed with white flowered, producing all pink snapdragons in the F1. What would you expect if you
Minchanka [31]

Answer:

It probably get pink because it has 1/2 chance it has 1/4 change of being white and 1/4 chance of being red

Explanation:

5 0
4 years ago
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The _____ surrounds the nucleus of the cell and helps assemble and package materials made in the cell
Andreas93 [3]
The nuclear envelope is the answer. 

I hope I helped :)
8 0
4 years ago
In the space below write a logo advertising the importance of genetic diversity to a population
wlad13 [49]

A logo advertising the importance of genetic diversity would be "Varied progeny to mask nature's agony"

Explanation:

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At the time of environmental change, the organism with a large population and adaptability will survive.

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4 years ago
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