Amarine biologist is working on a research vessel to study whale calls. his recording devices are measuring depths above 1,000 meters. as his vessel travels to cooler waters and begins to measure at greater depths, the marine biologist needs to make adjustments to his monitoring devices. why is that? a- from 0 to 1,000 meters, sound travels at a faster speed in cooler water. b- from 0 to 1,000 meters, sound travels at a slower speed in cooler water. c- at depths deeper than 1,000 meters so

Option B. The marine biologist needs to make adjustments to his monitoring devices because from 0 to 1.000 meters, sound travels at a slower speed in cooler water.

Explanation:

In water, the higher the temperature of the molecules creates a medium that allows sound to travel faster, in fact, sound travels abut 15 feet per second faster for every 1.8 degrees Fahrenheit  rise in the temperature of water. This is the reason that as the biologist's vessel travels to cooler waters, he needs to make adjustments to his monitoring devices.

the median of the data is 4.

step-by-step explanation:

the median means the middle number of a given number.

to decide which one is the median, arrange in ascending or descending order. but sometimes, you may find two(2) number in the middle, but it's easy, just add them together and divide by 2.

so,   determine the median of the data. 2, 3, 3, 4, 5, 7, 9

it is already arranged, count 3 times forward and 3 backward and the one left is your answer.

2,3,3,4,5,7,9

our answer is 4.

hope this !

swahili is an extremely rich and complex civilization, a set of ethnic groups articulated by a language and a series of cultural elements that fuse the african traditions, islam and indian culture. this growth was largely a result of the indian ocean trading network that brought in not just man-made riches, but also religious ideas, specifically islam, which had a significant impact on the local culture. furthermore, the development of the swahili language gave a common cultural unity to the people.