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chubhunter [2.5K]
3 years ago
5

____ are the small sacs that are the site of gas exchange in the lungs

Biology
1 answer:
sertanlavr [38]3 years ago
6 0

Answer:

alveoli

Explanation:

They are the smallest structures in our lungs where capillaries exchange O2 and CO2 in blood.

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Explain the theories behind cloud seeding and its formation.
zalisa [80]

Cloud seeding

Another instance where supercooled and mixed-phase clouds are studied extensively is related to cloud seeding and weather modification. Cloud seeding involves the addition of aerosol, such as silver iodide aerosol, that modifies the phase and size distribution of hydrometeors. The goal of cloud seeding is to alter the natural development of the cloud to enhance precipitation, suppress hail, dissipate fog, or reduce lightning. Various cloud seeding techniques are employed, as particles are released from rockets, aircraft, or ground. The seeding of ice-phase clouds can induce the phase transition from a supercooled water cloud to one composed of ice. In the case of dynamic cloud seeding, the purpose is to stimulate vertical air motions through increased buoyancy caused by the release of latent heat of freezing (Hobbs, 1975; Cotton and Pielke, 1995).

6 0
2 years ago
Read 2 more answers
What is the initial source of energy in all ecosystems?
Leokris [45]

Answer:

cells are the innermost source of energy in all organisms. please give me brailiest

8 0
3 years ago
2. If a nucleus has 8 chromosomes, how many chromosomes will be present after Telophase I? 3. What advantage does crossing-over
Brums [2.3K]

Answer:

Telophase I: 8 chromosomes composed of two sister chromatids  

Crossing over refers to the mechanism of recombination, this process being characterized in that increases the genetic variation

Spermatogenesis refers to the mechanism of formation of male gametes (sperms), while oogenesis is the process of formation of female gametes (oocytes)

Explanation:

Telophase I is the final step in meiosis I. During telophase I, the nuclear membrane is formed around the decondensed set of chromosomes and the nucleoli reappear.  

Spermatogenesis refers to the process by which haploid male germ cells (sperms) are generated within the seminiferous tubules in the testis, while oogenesis refers to the process of differentiation of the female egg cells (ova or oocytes) in the ovaries. Spermatogenesis is known to produce small and motile spermatic cells, while oogenesis is known to produce bigger non-motile oocytes.

4 0
2 years ago
Bruce has a genetic disorder. bruce and his wife, kim, have three children, one of which has the genetic disorder. how is this d
laiz [17]
This would be a recessive disease.

Father is dd
Mother is Dd (has to be because one child has the disease)

Parents cross is dd x Dd which gives rise to Dd (0.5) and dd (0.5). Each time they have a child they have a 50% chance of the child having the disease. In their case, only one of their 3 children is dd. The others though are carriers!
5 0
3 years ago
Which can be left out of a food chain
jonny [76]

Answer:

option b I think I think I am not sure

6 0
2 years ago
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