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zalisa [80]
3 years ago
5

What did Alfred Wegener try to prove with fossil evidence?

Biology
1 answer:
arsen [322]3 years ago
5 0

Answer:

Earth's continents were once connected in a single supercontinent.

Explanation:

v

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Complete the following sentence: "When ionic compounds dissociate in water, each ion is surrounded by a sphere of hydration: ___
Archy [21]

Answer:

Cations, Oxygen, Anions, Hydrogen

Explanation:

Water molecule is polar (meaning it has dipoles). The oxygen having a higher atomic mass attracts most of the electron cloud of the molecule becoming partially negatively charged and leaving the hydrogen end to be partially positive.

An Ionic compound is one between two atoms where one donates its electrons to the other for both to achieve stable configuration. The two atoms, therefore, become charged and are bought together by electrostatic forces.

When an ionic compound is put in water, it dissociates into its ions (anions and cations) They attract and repel with the polar water molecules depending on their charges. The anions (negatively charged ion) are surrounded by water molecules with the hydrogen ends and the cations are surrounded by water molecules with the oxygen ends.

3 0
3 years ago
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Do you believe that humans are impacting Earth's crust through fossil fuel extraction? Why or why not?​
allochka39001 [22]
Humans impact the physical environment in many ways overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.
5 0
2 years ago
Which organism has a central brain
jeka94

Answer: flatworm

Explanation:

8 0
2 years ago
What would be a limiting factor in an ecosystem?
Feliz [49]
D. population and nutrients


4 0
3 years ago
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humans developed antibiotics to fight bacterial infections however some antibiotics are no longer effective in killing the bacte
Lapatulllka [165]

Answer:

Changes in genetic makeup occurs with the passage of time.

Explanation:

Antibiotic cause mutation in the bacteria which allowed to develop resistance in the bacteria. This resistance and change in the genetic makeup obeys the theory of evolution which states that all species are changed gradually with the passage of time. The genetic makeup of bacteria also changes with the passage of time and attain resistance due to regular application of antibiotics so due to this resistance, the antibiotic can't work on the bacteria.

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3 years ago
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