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Marrrta [24]
3 years ago
14

how does the human circulatory system, digestive system, and respiratory system work together to keep cells alive? Answer in com

plete sentences using proper spelling and grammar.
Biology
1 answer:
Anna71 [15]3 years ago
8 0
The circulatory system is mainly made up of the heart and the blood vessels. It is closely related to the respiratory system which is primarily made up of the lungs. The digestive system is primarily made up of the gastrointestinal tract. This simply means your mouth, esophagus, stomach, small and large intestines, and rectum up until your anus. All the cells in the human body are kept alive by these systems working together in harmony.

The heart pumps blood throughout the whole body via the blood vessels. Blood, particularly red blood cells (RBC), carry oxygen and nutrients inside of them and release them to the other cells in the body. Oxygen comes from the lungs in the respiratory system every time we breathe in air. Nutrients come from the digestive system after food has been broken down to small components that can be utilized by the cells in the body.
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Which letter in Figure 1 represents meiosis? Why?
SSSSS [86.1K]

The letter D in Figure 1 represents meiosis, while letter A represents mitosis. Meiosis is a reductional cell division.

Mitosis is a type of cell division where a parent cell divides to produce two genetically identical daughter cells (in this case, diploid cells).

Meiosis is a reductional cell division where a parent cell divides twice to produce four daughter cells having half of the genetic material.

Meiosis occurs in germinal cells, while mitosis occurs in somatic (body) cells.

Learn more about meiosis in:

brainly.com/question/7002092

3 0
2 years ago
After injuring his knee kai began having pain and numbness in his lower leg. the doctor said the injury damaged nerves that run
Leno4ka [110]

Damage to the nervous system is causing Kai to have pain and numbness.  

<h3><u>Explanation:</u></h3>

Kai injured his knee. We know that the posterior surface of the knee has the quadrangular fossa which is guarded by the tendons of hamstrings anteriorly and by the two heads of gastrognemus muscle below. There are several nerves running down the leg through this region.

Any trauma to this fossa can cause these nerves to get damaged. Thus it can lead to numbness of lower limb. Proper physiotherapy is required to recover as soon as possible. Else that can even lead to paralysis of lower limb.  

6 0
3 years ago
Read 2 more answers
Inner / Outer Planets in relation to the sun, labeling Terrestrial planets from Gaseous planets.
Flura [38]

Answer:

The inner planets are closer to the Sun and are smaller and rockier. The outer planets are further away, larger and made up mostly of gas. The inner planets (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth and Mars.

7 0
2 years ago
By leaving crop roots in the ground and stalks on the surface, no-till plowing helps prevent ____________________.
shusha [124]

Answer:

Soil erosion.

Explanation:

No-till plowing can be defined as a farming method or technique which typically involves planting crops (seedlings) without tilling the soil rather the farmer would only open a narrow or very shallow trench of sufficient depth and width to cover up the seedlings. Thus, the no-till plowing makes crop residues to be left on the soil and by extension preventing soil erosion through the absorption of water by the crop residues.

Hence, by leaving crop roots in the ground and stalks on the surface, no-till plowing helps prevent soil erosion.

Additionally, the water retention ability of no-till plowing is usually a boon to farmers because it slows down evaporation and serves as a good protection for drought-stricken environments.

8 0
3 years ago
Read 2 more answers
Why are there so many satellites orbiting earth at this time?​
Alex17521 [72]

Answer:

2,787

Explanation:

Currently there are over 2,787 active artificial satellites orbiting the Earth.

4 0
2 years ago
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