Why they go into the sea first, and wjat helps their swimming abilities
Answer:
I think it’s the first one, A
Answer: d
Explanation: The atmosphere has 4 layers: the troposphere that we live in near the surface of the earth; the stratosphere that houses the ozone layer; the mesosphere, a colder and lower density layer with about 0.1% of the atmosphere; and the thermosphere, the top layer, where the air is hot but very thin.
Answer:
The correct answer would be A. It has DNA that is not contained within a nucleus.
The main difference between prokaryotic and eukaryotic cell is the absence of a well-defined nucleus and other membrane-bound organelles like the Golgi body, mitochondria et cetera in a prokaryotic cell.
The DNA in the prokaryotic cell floats freely in the cytoplasm in the region called nucleoid which means nucleus-like.
Thus, an observation like the absence of a nucleus can provide the evidence that a cell is most likely a prokaryote.
