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3 years ago

How does oxygen enters the lungs?

2 answers:

8 0

<span>Air is breathed in, it goes through the pharynx (if you are breathing through your nose), down the trachea (lung pipe), and into the lungs. Air is breathed in, it goes through the pharynx (if you are breathing through your nose), down the trachea (lung pipe), and into the lungs.

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natima [27]3 years ago

3 0

The oxygen travels down your windpipe into your lungs. After it exits through the bronchial tubes, it enters the alveoli, or air sacs. Once it does that, passes to the capillaries (blood vessels).

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Which subatomic particle orbits the nucleus?

Rom4ik [11]

Protons and neutrons

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2 years ago

How much energy radiated by the sun resches the Earth?

aliina [53]

Answer:

a 80% b50% ctwo billionths one one- hundredth

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2 years ago

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DNA extraction is a useful technique for scientists because it can be used _____. A. to see the nuclei of cells B. to absorb vir

ra1l [238]

DNA comprises the genetic makeup of every organism. It carries genetic information that is used by the organs in the body to determine what functions to carry out.

DNA cannot be used to see the nuclei of cells or absorb viruses. A person's personality cannot be determined from DNA.

The answer is D. to determine if people are related, as DNA between two people can be compared for similarities of code between the two.

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3 years ago

Imagine we reach the year 2050 and we have surpassed the the projected global population. World wide we are running out of fresh

Maslowich

The human race may survive through survival of the fittest. basically whoever has the biggest stick wins! The body also could adapt to the lack of water so you could preserve your bodily resources and manage them better. Or you could just change the environment to benefit yourself and mankind!

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3 years ago

Long legs (L) in racing horses is dominant to short legs (l). Good muscle tone (G) is dominant to weak muscle tone (g). Determin

vova2212 [387]

Answer:

See the answer below

Explanation:

Long leg (L) is dominant over short leg (l) and Good muscles (G) is dominant over weak muscles (g).

Heterozygous long leg, weak muscle = Llgg

Heterozygous long leg, strong muscle = LlGg

Llgg x LlGg

Offspring:

2 LLGg - Long leg, strong muscle

4 LlGg - Long leg, strong muscle

2 LLgg - Long leg, weak muscle

4 Llgg - long leg, weak muscle

2 llGg - short leg, strong muscle

2 llgg - short leg, weak muscle

Ratio of offspring with long leg and strong muscle = 6/16 or 3/8

Ratio of offspring with long leg and weak muscle = 6/16 or 3/8

Ratio of offspring with short leg and strong muscle = 2/16 or 1/8

Ratio of offspring with short leg and weak muscle = 2/16 or 1/8

5 0

2 years ago