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nekit [7.7K]
3 years ago
12

Identify What are two unique characteristics shared by all birds?

Biology
1 answer:
Vitek1552 [10]3 years ago
3 0
There all have feathers and lay eggs.
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Eukaryotic sexual life cycles show tremendous variation. Of the following elements, which do ALL sexual life cycles have in comm
larisa [96]

Answer:

II. meiosis

III. fertilization

IV. gametes

Explanation:

Gamete formation and fertilization are the processes performed by all the sexually reproducing organisms. Gametes are the cells that are formed in the male and female sexual organs of these organisms. Formation of gametes occurs by meiosis and therefore, the gametes of a diploid organism are always haploid.

Male and female gametes fuse during the process of fertilization and form the zygote which in turn divide repeatedly to produce an embryo. For instance, sperms and eggs are the male and female gametes that are formed in testes and ovaries of male and female human individuals respectively. The fusion of sperm and egg produces a zygote that finally develops into a young one.  

8 0
2 years ago
If the ancestral form for a particular lineage was aquatic and used gills for respiration, what changes would you expect to see
Marat540 [252]
<h2>The Respiration of Gills</h2>

Explanation:

  • A dominant part of aquatic animals like fish and prawns inhale through uncommon organs called gills.
  • The skin that help in utilizing oxygen broke up in water. which help in return of gases and Gills contain veins.
  • Amphibian life forms have a unique organ called gills, which permits them to inhale oxygen in the water.
  • The two sides of the pharynx (throat) by the Gills when the gases exchange in fish .
  • <em>Gills are tissues that resemble short strings, protein structures called fibers. </em>
  • These fibers have numerous capacities including the exchange of particles and water, just as the trading of <em>oxygen, carbon dioxide, acids and alkali.</em>
4 0
3 years ago
Need this as fast as Possible!!!!! I will put you for the Brainliest if you answer ALL and Get them RIGHT!!!! HURRY
LUCKY_DIMON [66]
<span>The answer to 10 is A as liquids expand with an increase in temperature. 12. Not able to answer. The answer to 17 is A as a the two different metals expand and contract at different rates when heated and cooled.</span>
8 0
3 years ago
Read 2 more answers
Use the periodic table from the lesson to answer the following question.
babymother [125]

Answer:

7 valence electrons

Explanation:

7 0
3 years ago
How can scientific conclusions be reliable, but also able to be changed with the introduction of new evidence
aleksklad [387]

Answer:

scientific conclusions are reliable as they are helpful for many things however it is true that after the evolution of new ideas the old theory have some changes or may change fully or may be proved wrong but yeah the old theories are still helpful for many reasons and things.

so I think scientific conclusions are reliable

8 0
2 years ago
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