Q: In a food chain, only about 10 percent of what passes to the next level? Choices: - mineral - vitamins - hydrogen - energy A:
energy

Q: Most plant cells have a large central what? Choices: - nuclei - loci - membranes - vacuole A:
vacuole

Q: Q: What component of a prokaryote is unique in molecular composition and mechanism of propulsion? Choices: - the sporangia - the membrane - the amoeba - the flagella A:
A: the flagella

Question: Q: What is the outermost layer of the skin? Choices: - dermis - nexus - callus - epidermis A:
Answer: epidermis

*Question*
Q: What term refers to a change in species over time? Choices: - spontaneous change - generation - mutation - evolution A:
**Answer**
evolution

(Question)
Q: Are ecotones wide or narrow? Choices: - wide - somewhere in between - narrow - can be both A:
(Answer)
can be both