Answer:
Across:
1. a sight to behold: spectacle
4. a tank fish live in: aquarium
8. you and all the kids around the same time: generation
10. the state of being a mother: maternity
down:
2. a shade of blue: aqua
3. having motherly feelings: maternal
5. to make or create something: generate
6. a life science: biology
7. one who investigates crimes: inspector
9. children of offspring: progeny