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Bess [88]
2 years ago
14

The main function of the respiratory system is to

Biology
2 answers:
Trava [24]2 years ago
5 0

Answer:

exchange O2 and CO2 gases.

Explanation:

The respiratory system's main function is to exchange oxygen and carbon dioxide gases within the body. The organs that make up the respiratory system include the nose, pharynx and larynx, the trachea, bronchi, and the lungs. Each of these organs help with the process of breathing and/or the exchanging of gases within them.

I hope this help :)

____ [38]2 years ago
3 0
Exchange oxygen and carbon dioxide gases
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In 1958, Meselson and Stahl conducted an experiment to determine which of the three proposed methods of DNA replication was corr
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<h2>Meselson and Stahl conducted an experiment to determine the correct proposed methods of DNA replication was semi-conservative. the three proposed models for DNA replication are semi-conservative, conservative, and dispersive.</h2>

Explanation:

In Semi-conservative replication model, the two strands of DNA uncoil from each other. It perform with the original strand and a new strand.

In Conservative replication model, DNA replication didn't open at all, but the parent strands remains undamaged by creating a new and separate  molecule that consists of two new strands.

In Dispersive replication model, DNA replication results in two DNA molecules that consists of both parental and daughter DNA.

He demonstrated that semi-conservative DNA replication is an universal mechanism allocated by all organisms on Earth.

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3 years ago
Helps scientist study our universe and galaxies.
qwelly [4]

Answer:

D.) both a and c

Explanation:

Past observations made early in history as well as telescopes and space probes are very important in studying our universe and galaxies.

  • Space probes are increasingly gaining momentum as technological and scientific advancements are being made.
  • Telescopes are used to see or picture objects that are very far away in space.
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Microscopes are not used in galactic studies. They are only used to study the world of micro-organisms.

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2 years ago
What is a test variable? Give an example.
Sphinxa [80]

Answer:

skynesher / Getty Images. The dependent variable is the variable that is being measured or tested in an experiment. For example, in a study looking at how tutoring impacts test scores, the dependent variable would be the participants' test scores, since that is what is being measured.

Explanation:

Hope this helps, If it did, then I would really appreciate it if you gave me Brainliest, I only need one more to rank up and it has taken forever to get to where I am currently. Thanks.

6 0
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The weight of an object at the south pole is
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The same weight it would be anywhere else in the world.

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Please answer the picture
Oksana_A [137]
2, 4, 1, 3, 5

the tiles go into the sequence in that order.

first one is tile 2, second is tile 4, etc.
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