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Likurg_2 [28]
3 years ago
11

What nonliving things might you find in an ecosystem?

Biology
1 answer:
frutty [35]3 years ago
5 0

Answer:

Rocks, oxygen, soil, mud, dirt, air, rain, snow, sunlight, temperature, water, air, wind, rocks, and soil.

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Ventricular systole begins during the __________ phase of the cardiac cycle. Ventricular systole begins during the __________ ph
Zina [86]

Answer

              Ventricular systole begins during the  <u>isovolumetric contraction </u>phase of the cardiac cycle.

Explanation

1. Ventricular ejection

The forceful expulsion of blood from the ventricles into the aorta and the pulmonary arteries.

2. Isovolumetric contraction

                     The interval between the closing of the AV valves and the opening of the semilunar valves (aortic and pulmonary valves) is known as isovolumetric contraction. it is the beginig of systole. it is the first chamber systolic event. The myocardial muscle fibers have begun to shorten but have not developed enough pressure in the ventricles to overcome the aortic and pulmonary end-diastolic pressures and open the aortic and pulmonary valves. During this period of muscle fiber contraction, the ventricular volumes do not change.

3. Ventricular filling  

                 In this stage AV valve is opened and the blood that has accumulated in atria flow rapidly into ventricles. The ventricular volume increase rapidly. A third heart sound known as S3 is heared during this stage.

4. Isovolumetric relaxation

                  It is the beginning of diastole. The AV valve are closed at beginig. The atrium in diastole has been filling with blood on top of the closed AV valve, causing atrial pressure to rise gradually. The pressure in the ventricles continues to drop. Ventricular volume is at a minimum and is ready to be filled again with blood.


5 0
3 years ago
William is interested in exercising more, but does not feel he has the time. Write a short response explaining how he can find t
sdas [7]
Exercising doesn't mean you have to spend hours in the gym. Exercises can be done at the comforts of your home too, and there's plenty of exercise available, especially for those who have less time to do so. Just like for example, waiting time. While you are waiting for your clothes in the washing machine to finish, you may use this time to do some basic exercises such as running in place, jumping jacks or carrying weights. It may only take a few minutes, but performing these exercises in less time is better than not doing it at all.
4 0
3 years ago
What is an environmental impact of the use of nuclear fuels?
miss Akunina [59]

Answer:

Nuclear energy produces radioactive waste

A major environmental concern related to nuclear power is the creation of radioactive wastes such as uranium mill tailings, spent (used) reactor fuel, and other radioactive wastes. These materials can remain radioactive and dangerous to human health for thousands of years

Explanation:

       :>

6 0
2 years ago
List one organism and describe all of its adaptations.​
sleet_krkn [62]

Answer:

cactus

Explanation:

heat, water loss,

7 0
2 years ago
HELP!!!! answer quickly
Maksim231197 [3]

Answer:

Movement of free water molecules from an area of low concentration to an area of higher concentration

Explanation:

4 0
3 years ago
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