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Allushta [10]
3 years ago
8

What do we breathe out? What is the percentage of oxygen and carbon dioxide in our exhaled air?

Biology
2 answers:
olga nikolaevna [1]3 years ago
8 0
We breathe out carbon dioxide it’s percentage in exhaled air is about 4%-5% by its volume
emmasim [6.3K]3 years ago
8 0
1. We breathe out CARBON DIOXIDE
2. Consequently, we exhale 16% of oxygen and 4% carbon dioxide
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The Earth's lithosphere contains?
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When acid comes into contact with calcite, the acid bubbles. How can geologists use acid to confirm that the rock towers are mad
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1. A dominant gene (A) causes yellow color in rats, the dominant allele on another independent gene (R) produces black coat colo
Novosadov [1.4K]

Answer:

Parents: Yellow (Aarr) and Grey (AaRr)

Explanation:

Given:

allele A = yellow

allele R = black,

Heteroozygous = gray

Genotypes of the parents:

yellow (Aarr) - female

gray (AaRr) - gray

cross between these

Parents: Yellow (Aarr)  and Grey (AaRr)

Gametes: (Ar, ar) and (AR, Ar, aR, ar)

F1 (Punnet square)

----|----- AR ------|------- Ar ------|------ aR -----|----- ar

Ar | AARr (gray) | AArr (yellow) | AaRr (gray) | Aarr (yellow)

ar | AaRr (gray) | Aarr (yellow) | aaRr (black) | aarr (cream)

Ratio: 3/8 yellow : 3/8 gray : 1/8 cream : 1/8 black

6 0
3 years ago
In which tissue system would you find root hairs and the epidermis? A. Apical meristem B. Ground tissue C. Dermal tissue D. Vasc
kozerog [31]
<span>D. Vascular tissue
</span>
Vascular tissue is responsible for transporting water and nutrients in plants. <span> The Vascular tissue consists of the Xylem and the Phloem. The main function of the Xylem is to transport water and minerals throughout all parts of the plant. Phloem on the other hand is responsible for transporting organic molecules that are larger in size. The vascular system, consisting on the Xylem and the Phloem runs from the roots of the plats through the branches and upto the leaves. It controls the total transportation of the water and nutrients.</span>
5 0
3 years ago
How many amino acids are necessary for the human body to function properly?
Aleksandr-060686 [28]

Answer:

b, 8-10

Explanation:

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they are histidine, valine, isoleucine, methionine, phenylalanine, threonine, tryptophan, leucine, and lysine

hope this helps! :)

3 0
3 years ago
Read 2 more answers
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