Birds having hollow bones to make them lighter for flight, is what type of adaptation?

Biology

2 answers:

marin [14]3 years ago

6 0

Physical because it is a physical change to adapt to it's nature.

Fofino [41]3 years ago

5 0

It is physical! I am sorry if I am to late. Everyone who see this I hope you have a amazing day!!

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Sixty-five million years ago, according to some scientists, an asteroid bigger than mount everest slammed into north america, wh

julsineya [31]

That affirmation is correct.

Further information:

It is estimated that about 3/4 of all species where extinct.
This event gave way to the Cenozoic era, which is the one we live in today.

Hope it helped,

Happy homework/ study/ exam!

8 0

3 years ago

g Two closely related species of plant (A and B) hybridize to form a new species (C). Species A is diploid and has 8 chromosomes

Aleks04 [339]

Answer:

allopolyploidy

Explanation:

Polyploidy is the condition by which a cell might have more than two chromosome sets that form homologous pairs. It might occur due to a failure or abnormality in cell division.

Autopolyploidy

Refer to a type of polyploidy in which an organism has more than two copies of homologous chromosomes. It results from the duplication of a group of chromosomes of the same species. Autopolyploid individuals have at least three groups of homologous chromosomes. Autopolyploidy is produced by the gamete fusion of the same progenitor - same species-, duplicating the number of chromosomes of diploid species. The autopolyploid cell has groups of homologous chromosomes. Autopolyploidy is produced mainly due to non-disjunction during meiosis.

Allopolyploidy

Refer to another type of polyploidy in which species have more than three sets of chromosomes in their cells. Allopolyploidy occurs when two different species mate, leading to the fusion of gametes that belong to different species and produce a new hybrid. The chromosomic complement has more than two copies of chromosomes. The hybrid is infertile with the parental species. The allopolyploid cells have chromosome groups that are not homologous.

In the exposed example two different species mate and produce a hybrid species.

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3 years ago

Neuroscience research has found that _____ produces positive structural changes in the brain..

Scilla [17]

The right answer is meditation.

Meditation is a very ancient spiritual, mental and postural practice. During meditation, the individual comes to an introspection and a long reflection on himself.

Meditation finds its origin in the East, but also in the Buddhist tradition. The practice of meditation allows you to control negative emotions and refocus your mind.

6 0

3 years ago

If a person cuts his finger eventually the cut will heal and the skin will be whole again how does the gap created by the cut ge

Greeley [361]

Answer:

Cells on either side of the cut pull toward each other until they close the gap.

~Hope this helps!~

8 0

4 years ago

Traits that enable an organism to reproduce, without necessarily helping them to survive, are often selected for. Darwin called

4vir4ik [10]

The example that does not exhibit sexual selection is:
D. male elephant seals fighting over territory and potential female mates
The competition for territory is also one that helps the elephant seals survive. This is because a seal with a larger territory is likely to have access to a greater amount of resources, ensuring its survival.

4 0

4 years ago

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