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inna [77]
3 years ago
13

Which of the following is an unanswered question about life on Earth?

Biology
2 answers:
Agata [3.3K]3 years ago
8 0
Did early life arise spontaneously or did it come from space?

KatRina [158]3 years ago
7 0

Answer;

C) Did early life arise spontaneously or did it come from space?

Explanation;

-Many theories of the origin of life have been proposed, but since it's hard to prove or disprove them, no fully accepted theory exists.

-The answer to this question (Did early life arise spontaneously or did it come from space?) would not only fill one of the largest gaps in scientists' understanding of nature, but also would have important implications for the likelihood of finding life elsewhere in the universe.

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A tissue sample was taken from an infected wound and cells were viewed under the microscope. Each cell contained a cell wall, ce
lukranit [14]

An unidentified prokaryotic cell. Thus, option "4" is correct.

<h3>What atr prokaryotes and eukaryotes?</h3>

Prokaryotes are the unicellular organisms that do not contain nucleus and membrane bound organelle in their cell. Their genetic material is present in the cytoplasm.

On the other hand, eukaryotes have true nucleus that contains the genetic material (DNA). They also contain membrane bound specialised organelles (such as mitochondria, endoplasmic reticulum, golgi complex).

Thus, option "4" is correct.

To learn more about Prokaryotes  click here:

brainly.com/question/15329345

#SPJ1

7 0
2 years ago
_____are needed for sexual reproduction.<br><br> Gametes<br> Pollen<br> Spores<br> Cells
muminat

Answer:

Gametes

Explanation:

Gametes are sex cells.

8 0
3 years ago
3. Name the six kingdoms of life, and give two charac-<br>teristics of each.​
IRISSAK [1]

Answer:

Animalia - multicellular, eukaryotic

Plantae - vacuolate eukaryotic cells, multicellular

Protista - unicellular and multicellular, eukaryotic

Fungi - decomposers, non-motile

Eubacteria - unicellular, prokaryotic

Archaebacteria - no peptidoglycan, glycoproteins and polysaccharides in cell walls.

Hope that helps. :)

3 0
3 years ago
What do meninges and the cerebrospinal fluids have in common
DerKrebs [107]
Meninges and cerebrospinal fluid both protect the brain from physical shock.
Meninges is one of the membranes that engulf the brain .
Cerebrospinal fluid is the fluid that the brain floats in and absorbs shocks. #answerwithquality #BAL
8 0
3 years ago
Read 2 more answers
Wind power creates _____ pollution.
Mamont248 [21]
 Wind power creates n<span>oise pollution. I hope that helped</span>
8 0
3 years ago
Read 2 more answers
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