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Shtirlitz [24]
3 years ago
5

Cardiovascular fitness uses which of the following body systems?

Biology
2 answers:
Dmitry [639]3 years ago
7 0

Answer:

Explanation:Urinary → kidneys

Integumentary → skin, sweat, glands

Respiratory → lungs

Digestive → intestines

Circulatory → Blood that circulates through the body passes through one of the two kidneys where it is filtered!

So your answer is : ( D )

There you go! ☻

Karolina [17]3 years ago
5 0
B, circulatory and respiratory 
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Photosynthesis produces the chemical energy that a plant’s cells need. What form does this chemical energy take?.
Licemer1 [7]

Answer:

Light

Explanation:

Photosynthesis is the process of turning light into energy

3 0
2 years ago
What are the two main processes that ecosystems depend upon?
LekaFEV [45]

Answer:

Option (B)

Explanation:

Ecosystem is usually defined as a biological community or a group of living species that exist in an environment and interacts with it, for their growth and expansion. The type of ecosystem is controlled by factors such a rainfall, temperature, elevation, and many more.

The two main processes on which an ecosystem depends are the nutrient recycle and flow of energy. The ecosystem obtains various nutrients such as carbon, iron, phosphorous, sodium, potassium, sulfur and many more, from the organisms and plants. The micro-organisms or decomposers are also responsible for providing the nutrients to the soil, which are then taken up by the plants and are again transferred to the consumers when they obtain those plants. These nutrients are continuously transferred and recycled from one level to another.

Similarly, the energy also is transferred from one form to another. About 10% of the energy is transported from one trophic level to the next higher trophic level, and the remaining energy is released into the environment or atmosphere.

This is how both these processes occur simultaneously and keeps on recycling and reusing.

Thus, the correct answer is option (B).

4 0
3 years ago
Read 2 more answers
Assume a rubber rod is rubbed against a rabbit fur and gains 5 electrons. Which of the following is true?
lys-0071 [83]

Answer:

The fur lost 5 electrons.

Explanation:

Protons can't be moved between objects or elements. Protons are in the center of atoms, not only that but it is also used to identify what element is being used.

Electrons, however, can be moved. It can be decreased or increased. Not only that but because the rubber rod GAINED 5 elections. It is the rabbit fur that LOSES 5 electrons.

3 0
2 years ago
Where is the heart located in your body?
MatroZZZ [7]
In your chest area..Behind your ribs

8 0
3 years ago
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The end‑replication problem (telomere problem) exists in eukaryotic chromosomes and is characterized by the chromosomes shorteni
frez [133]

Answer:

The correct answers are option 3) "DNA polymerase synthesizes DNA from the phosphate end to the hydroxyl end" and 4) "DNA polymerase requires a primer for DNA synthesis".

Explanation:

The end‑replication problem (telomere problem), refers to the shortening of the telomeres because linear DNA molecules are not entirely replicated by conventional DNA polymerases. Two of the reasons why this problem exists in eukaryotic chromosomes are that DNA polymerase synthesizes DNA from the phosphate end to the hydroxyl end and DNA polymerase requires a primer for DNA synthesis. The incomplete synthesis takes place at the lagging strand during eukaryotic replication, where a RNA primer is needed for the synthesis of the Okazaki fragments and DNA polymerase leaves a 3' hydroxyl group at the end of the sequence. This problem is assessed by the cells with the recruitment of a reverse transcriptase called telomerase that adds telomeric repeats in the unfilled sequences.

8 0
3 years ago
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