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3 years ago

What are the two most important processes in the cycling of oxygen in and out of the atmosphere?

2 answers:

5 0

C.
It is C because photosynthesis uses CO2 to form O2 and respiration uses O2 to create CO2, both processes filter oxygen through the atmosphere.

Ainat [17]3 years ago

5 0

Answer: Option C

Explanation:

Photosynthesis is the process by which plants makes food by the help of the carbon dioxide found in the atmosphere. This process take place in the presence of sunlight.

The end product of this process is glucose with oxygen as a by-product. The oxygen is released into the atmosphere.

The oxygen is used by all the living forms of life on earth and the carbon dioxide is released out by the animals in the atmosphere by the help of the process known as cellular respiration.

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How do helmets protect your head? a. By creating a large area to spread out the pressure of a blow to your head. b. By focusing

Andru [333]

Your answer is A.

I hope this helps

5 0

3 years ago

Read 2 more answers

A family car has a mass of 1400 kg. In an accident it hits a wall and goes from a speed of 27 m/s to a standstill in 1.5 seconds

horrorfan [7]

Answer:

The force has been reduced by 8018 N

Explanation:

The impulse exerted on the car during the crash is equal to the product of the force exerted and the duration of the collision, and it is also equal to the change in momentum of the car. So we can write:

$F\Delta t = m\Delta v$

where:

F is the force exerted on the car

$\Delta t$ is the duration of the collision

m = 1400 kg is the mass of the car

$\Delta v=-27 m/s$ is the change in velocity of the car

We can re-write the equation as

$F=\frac{m\Delta v}{\Delta t}$

In the 1st collision, the time is 1.5 seconds, so the force is

$F_1=\frac{(1400)(-27)}{1.5}=-25,200 N$

In the 2nd collision, the time is increased to 2.2 seconds, so the force is

$F_2=\frac{(1400)(-27)}{2.2}=-17,182 N$

Therefore, the force has been reduced by:

$F_2-F_1=-17,182-(-25,200)=8018 N$

4 0

4 years ago

Read 2 more answers

When a person stands on a rotating merry-go-round the frictional force?

wel

Answer. dry friction- <span> resists relative lateral motion of two solid surfaces in contact.</span>

4 0

3 years ago

What is Potentiometer

Katena32 [7]

Answer:

an instrument for measuring an electromotive force by balancing it against the potential difference produced by passing a known current through a known variable resistance.

3 0

3 years ago

When you must add three vectors together, what is not true this process? You must only give a magnitude of the resultant vector

vovangra [49]

The addition of any numbers of vector provide the magnitude as well as the direction of the resultant vector, hence the mentioned first option is not true.

The addition of vector required to connect the head of the one vector with the tail of the other vector and any vector can be moved in the plane parallet to the previous location, so, the mentioned second and third options are true.

4 0

3 years ago