Oil and water separate because they have different densities.
The correct answer is option C, that is, the presence of the nuclear membrane.
Cyanobacteria is a phylum of bacteria that attain their energy via the process of photosynthesis, and are the only photosynthetic prokaryotes possessing the tendency to generate oxygen. As a prokaryote, they are devoid of the nuclear membrane.
Euglena refers to a single cell flagellate eukaryote. It comes under the class Euglenoidea. The species of Euglena are witnessed in salt water and in freshwater. Being a eukaryote, they possess nuclear membrane.
Genetic diseases is one of the topics that will be covered in biology
The answer should be "Island finches resembled mainland finches, but were not the same species."
Answer: C
Explanation: The atomic mass is 22.990 so it would be C
