Answer:
The eukaryotic cell nucleus. Visible in this diagram are the ribosome-studded double membranes of the nuclear envelope, the DNA (complexed as chromatin), and the nucleolus. Within the cell nucleus is a viscous liquid called nucleoplasm, similar to the cytoplasm found outside the nucleus.
Biology is the study of natural science (nature) and it is important to humans cause we learn about it
what? I think you're missing some crucial information in this question.
B ecosystem. They include abiotic factors and biotic factors.
