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brilliants [131]
2 years ago
14

Why we have tears ? what is function of it ?

Biology
1 answer:
mel-nik [20]2 years ago
6 0

Answer: There are reflex tears and continuous tears. Reflex tears clear debris from your eyes and continuous tears lubricate them and protect them from infections.

Explanation:

They also smooth the surface of eyes so that lights refracts correctly, so we can see clearly.

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In mice, black color (B) is dominant to white (b). At a different locus, a dominant allele (A) produces a band of yellow just be
artcher [175]

Answer:

3

Explanation:

Heterozygous mice at both loci would be BbAa genotype.

B (black) is dominant over b (white) but the presence of A results in agouti.

Crossing two heterozygous:

     BbAa    x    BbAa

Progeny

<em>9 B_A_ - Agouti</em>

<em>3 bbA_ - agouti</em>

<em>3 B_aa - Black</em>

<em>1 bbaa - white</em>

Hence, 3 out of 16 progeny will be black in color.

<em>See the attached image for the Punnet's square analysis of the cross.</em>

4 0
3 years ago
Which of the following processes begins when a star enters the main sequence?
Katena32 [7]

Hello there Jonnromeroo, thank you for asking a question here on Brainly!

You Asked ➤ Which of the following processes begins when a star enters the main sequence?

↴ OUR CHOICES ↴

A: Nuclear fission

B: Nuclear fusion

C: Condensation of a nebula

D: Appearance of a supernova

------------------------------------------------------------------------------------

Answer ➤ B: Nuclear fusion

Explanation: When a star begins the process of being created, it is hot and dense. Really hot and dense! It begins to start fusing with helium which is the start of its main sequence called nuclear fusion.

I hope this answer is helpful to you, but please let me know if you have any other questions regarding it.  

<em>- Qamar  </em>

6 0
3 years ago
Read 2 more answers
Replication is performed prior to what
wel
Replication is performed prior to cell division
5 0
3 years ago
How does the excretory system work with the muscular system?
Norma-Jean [14]

Answer:

How the Muscular and the excretory system work together. The Muscular system helps the Excretory system by moving waste through the body and protect its organs. The Excretory system helps the Muscular system by getting rid of carbon dioxide from the muscles.

Explanation:

4 0
3 years ago
All of the following are functions of a coelom EXCEPT serving as a hydrostatic skeleton. processing and storing food. allows dig
Likurg_2 [28]

Answer:

Processing and storing food.

Explanation:

The coelom is the hollow structure formed in the organisms filled with the coelom fluid. The coelom is formed during embryogenesis which may be lined by the mesodermal layer or not.

The formation of coelom serves many functions in different organisms like it allows the internal movement of the organs in the body, allows the independent movement of the digestive tract, the fluid present in the cavity acts as a hydrostatic skeleton in the lower organism and cushions the internal organs.

The function that is not performed by the coelom is that it is not involved in the processing and storing food in organisms.

Thus, Processing and storing food is correct.

3 0
3 years ago
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