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.
Eukaryotes are organisms whose cells have a nucleus enclosed within a nuclear envelope.
B!
Parasitism is when one organism benefits and harms the organism it is living off of, while the organism it is living off of will only be harmed and does not benefit.
Answer:
Your answer is D). Like most cold-blooded animals, geckos' bodies are unable to maintain a homeostatic body temperature on their own, therefore they must bask in the sun in order to increase their body heat, and hide in the shade when it's too hot.