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3 years ago

Why do olws turn their heads around

Biology

2 answers:

Lana71 [14]3 years ago

8 0

They can’t see fully

Sedaia [141]3 years ago

5 0

Answer:Because they can't see

Explanation:Owls have tubular rather than round-shaped eyes, so they aren't able to move them around much. That's why they rotate their heads – so they can see. ... As it turns out, owls have uniquely constructed necks and an arterial system that feeds blood to the brain even while they are twisting their necks to rotate their heads.

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sergejj [24]

Active Immunity is natural.

Passive Immunity is maternal.

Active Immunity from Vaccination.

Passive Immunity is Artificial.

Passive Immunity:

Does not require previous exposure to a disease agent

Takes effect immediately

Does not last long (up to a few months)

Active Immunity is produced inside of the body, whereas passive immunity is introduced from outside of the body.

Active Immunity is from direct infection and vaccination.

Passive Immunity is from Breast milk, Injection, Mother to baby through the placenta.

Active Immunity takes effect over time (typically several weeks).

Passive Immunity takes effect immediately.

Active Immunity's length of efficacy is Long-term to lifelong.

Passive Immunity is short-term.

Active Immunity is produced by memory cells, Passive Immunity is not.

Hope this was insightful and enough information.

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3 years ago

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Ammonoids are found in rock layers from six different geological periods. Yet Ammonoids are considered excellent index fossils.

loris [4]

Ammonoids are good as index fossils because of the following characteristics;

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2. They have easily recognizable features, such as shells and the highly crenulated and complex suture, that are well preserved in rocks

3. Their rapid evolution that can assist determine changes and variations in the then environment

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3 years ago

The biodiversity and distribution of penguin species in the Antarctic Peninsula are changing as sea ice disappears. This is most

Vilka [71]

I believe the correct answer from the choices listed above is the first option. The biodiversity and distribution of penguin species in the Antarctic Peninsula are changing as sea ice disappears. This is caused by the climate change which causes glaciers to melt down rising the sea levels. Hope this answers the question. Have a nice day.

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bearhunter [10]

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Ksenya-84 [330]

Answer:

bacterial cells i think or just use google

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