What effect have human activities had on the ozone layer?

2 answers:

4 0

People have been putting harsh chemicals into the air so much that the ozone layer had a hole in it in the 1980’s due to mostly hairspray. The more chemicals are in products we use on a daily basis the more the ozone layer will get a whole again

IgorLugansk [536]2 years ago

3 0

Answer:

Human activities cause the emission of halogen source gases that contain chlorine and bromine atoms. These emissions into the atmosphere ultimately lead to stratospheric ozone depletion.

Explanation:

Hope this helped!

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The flowchart below shows the major steps in a system that builds mp3 players.

ValentinkaMS [17]

Answer:

A . II and IV only.

Explanation:

Process is defined as the series of steps that are followed to achieve certain goal.
In the flow chart I, III and V show raw material, the parts and Mp3 player. respectively.
None of these involves steps or method.
Step II shows Production. It involves methods and steps that convert the raw material in to product. Thus, it is a process.
Step IV show assembly. Assembling also involves series of steps and method that combine the part to make the Mp3 player. Thus it is also a process.

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elena-s [515]

The adult heart pumps about five quarts of blood each minute so around 2,000 gallons<span> of blood each day.A typical athlete's heart churns out up to </span>eight gallons<span> of blood per minute.</span>

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Which of these statements best describes the connection between biodiversity and evolution?

charle [14.2K]

Answer:

I believe the answer is c

Explanation:

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Investigators have arrived at a crime scene and are ready to search for evidence. What needs to happen next?

denpristay [2]

Answer: C . They should map out a grid to systematically look for evidence.

Explanation:

As a crime has been committed, the investigators do not need a search warrant so there is no need to ask a Judge for one so option A is incorrect.

It is best if evidence is searched for in different locations not just the primary scene so option B is incorrect.

Setting up a grip to enable the systematic analysis of evidence is their most likely course of action so option C is correct.

Even if the case is not complicated, evidence still needs to be searched for so option D is wrong.

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