I believe it is the first one but I am not 100% sure
Answer:
AT and GC are DNA base pairing
Explanation:
<span>Presence of oxygen means that the organisms are not anaerobic so the answer is D. algae. Eukaryotic and prokaryotic cells can be anaerobic meaning that they live in circumstances where there's no oxygen. Algae were the first that required oxygen to thrive. Cyanobacteria are like other bacteria parts of the prokaryotic cell type.</span>
I am so sorry you have waited this long for an answer! The most common cloud type produced by warm fronts are stratus clouds.
I am not a professional, simply using prior knowledge!