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Advocard [28]
3 years ago
9

In the 1970s, archeologists unearthed a vast cemetery in the Atacama Desert of Chile. Because the Atacama is the driest desert o

n Earth, bodies over 800 years old were better preserved than might be expected. Some facial and brain tissues were mummified. The skulls of four women appeared as if the bone had been eaten, though it was obvious to the archeologists that the women had lived with the condition and died from other causes. It wasn’t until in 2009 that scientists were able to solve the mystery of these skulls. Genetic analysis of tissue samples revealed that a flagellated protozoan had moved from facial lesions to the women’s skulls, slowly eating them away over a 20-year period.
Which protozoan species is most likely the causative agent for this infection?
Biology
1 answer:
natta225 [31]3 years ago
7 0

Answer:

Species of the genus Leishmania

Explanation:

The details of the research can be studied at : https://www.sciencemag.org/news/2009/09/mystery-desert

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List the steps of how a squirrel hibernates.
hoa [83]

Answer:

1. First of all, a squirrel would make sure to stash lots of food before and during the winter.

2. The squirrel would claim its own tree hollow/burrow.

3. They wrap themselves into a tight ball and go into a state of torpor (Torpor is a state where their body temperature becomes about the same temperature as their surrounding hibernaculum. This causes their heart rate to slow and causes them to use less energy)

4. Squirrels get up after 20 or so days to rewarm themselves up, and perhaps eat something to regain their energy. After that they will head back to their hibernaculum to continue hibernation.

5. When spring approaches they will fully wake up, go eat, regain their energy, and prepare themselves for the mating season.

Hope this helps :)

4 0
3 years ago
PLEASE HELP!!!!!!!!!!!
timama [110]
In the nucleus I think
7 0
3 years ago
Read 2 more answers
1. List seven potential environmental impacts<br> of mining.
KonstantinChe [14]

Answer:

Pollution

Destruction of Land

Subsidence

Noise

Impact on the Biological Environment

Energy

Long-term Supplies of Mineral Resources

Explanation:

3 0
3 years ago
Explain the reasons for changes in how organisms are classified.
san4es73 [151]
<span>Organisms used to be classified in the earliest times according to their size. As science progressed, they started getting organized by their physical traits and now they're organized by traits found in their species that are not found in others based on the theory of evolution. They are classified according to how they developed from a starting organism.</span>
4 0
3 years ago
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how do fossils give evidence of continental drift? List 2 examples using fossils found on different land masses.
Ivanshal [37]

Answer:

Explanation:

There are many examples of fossils found on separate continents and nowhere else, suggesting the continents were once joined. If Continental Drift had not occurred, the alternative explanations would be:

The species evolved independently on separate continents – contradicting Darwin’s theory of evolution.

They swam to the other continent/s in breeding pairs to establish a second population.

5 0
2 years ago
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