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pychu [463]
2 years ago
13

Oxygen-poor blood flows out of the heart and into the lungs. Nutrients and oxygen are sent to other cells and parts of the body.

The blood then returns to the heart to begin the process again. Which of the body's systems is the above process describing? Answers (A) -The skeletal system (B)-The digestive system (C)-The respiratory system (D)-The circulatory system
Biology
1 answer:
Alexxandr [17]2 years ago
8 0

Answer:

(D)-The circulatory system

Explanation:

lol just did it

and pls give me thanks

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How many newborn would you expect to have cystic fibrosis in a population of 10,000 people?
Marina CMI [18]

Answer:

6

Explanation:

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How do the cells in a fish react when moving from saltwater to freshwater?
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a.the cells gain water

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Some interactions lead to _____, which occurs when organisms in an environment rely on each other for resources. An example of t
juin [17]

Answer:

The correct answer will be:

1. Mutualism

2. Competition

3. Commensalism

Explanation:

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1. <u>Competition</u>- interaction occurs when two or more than two species depend on the same resources, sharing the same habitat and niche. These species will fight for the resources and both will be negatively affected.

2. <u>Commensalism-</u> interaction takes place when one organism is benefited while the other is neither harmed nor gained. For example- the interaction between Remora fish and large fish in the ocean.

3. <u>Mutualism</u> -occurs when the species are dependent on each other for the resources and both benefits each other. For example- the plants and birds co-evolved benefiting each other like animals helps in pollination and plants provide nectar to them.

Thus, the selected options are the correct answer.

7 0
3 years ago
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Dengue fever is an infectious disease of humans that is caused by a virus. There are four main viral strains, and an individual
Yuri [45]

Answer:

12

Explanation:

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Since an individual cannot be infected again with the strain from which he/she is been previously infected;

Then, at the second time;

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Thus; the number of possible different levels of severity can be viewed by forming two lettered word  P, Q, R, and S without repetition which is:

= 4 × 3

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3 years ago
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hope this helps.
my sister is called pria too lol :)
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