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Rudik [331]
3 years ago
11

Which kind of action is a cause of air pollution? A. Trash is dropped in a national wildlife preserve. B. Poisons are released i

nto a major river. C. Tuna are fished to extinction. D. Gasoline is burned by a car engine.
Biology
2 answers:
Komok [63]3 years ago
7 0

Answer: D

Explanation: when gasoline is burned by the car, it releases gas which pollutes the air.

Marrrta [24]3 years ago
4 0
D. Gasoline is burned by a car engine.
(Good luck!!)
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Plz help and make sure the answers are correct
san4es73 [151]
Hello, Umarhaley.

For question 12 the answer is :
B, since the fluid moves from an area of high concentration to lower concentration to calibrate it!

For question 13 the answer is : 
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For question 14 the answer is : 
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-procklown


6 0
3 years ago
8. What are the three most important organs in the excretory system?
Mariulka [41]

Answer:

Kidneys, ureters and bladder

6 0
2 years ago
How can carbohydrates, lipids, and proteins be detected in foods?
tino4ka555 [31]
The Benedict’s Test is the test which can detect carbohydrates and glucose in foods. During this process, the sample or the food is placed into a test tube and then some drops of Benedict's solution is added to it,and is then put into a beaker of boiling water. When the mixture of food and the Benedict substance turns reddish orange instead of staying blue, this means that it is positive. The mixture has simple sugar or has carbohydrates or glucose. On the other hand, lipids are tested using the brown paper test. When the paper turns transparent when a drop of food is put into it, it means that is is positive as well. When you want to test if the food has proteins, you have to test it with Biurets. Observe if the color change when you put some Biurets solution to the food sample. It is positive if the food turns light purple. Test if the food is positive with starches through the use of iodine. Food having iodine drops should turn purple instead of staying a yellow color.
6 0
2 years ago
The scuba diver is a living system. The scuba gear or self- contained underwater breathing apparatus, is a system of air exchang
Verdich [7]

Answer: The carbon dioxide is the output and oxygen is the input of the Scuba apparatus.

Explanation:

The scuba apparatus is a life saving apparatus used by the sea divers. It recycles the exhaled gas and removes the carbon dioxide and compensates for the utilized oxygen gas before the diver is actually supplied with the gas for the purpose of breathing in a circuit. Hence, the carbon dioxide gas is the output and the oxygen is the input.

5 0
3 years ago
What advantage does the switch to sexual reproduction give the aphids?
romanna [79]
)Sexual reproduction maintains a constant level of variation in the population and requires less energy.
6 0
3 years ago
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