Q: What kind of bonds does boron form rather than metallic lattices? A:

OPTIONS:
- magnetic bonds
- electron bonds
- bilateral
- multicenter

Answer: multicenter

Problem: OPTIONS:
- darwin on evolution
- brain of evolution
- cycle of evolution
- theory of evolution
Q: Q: Misconceptions about what theory contribute to the controversy that still surrounds this fundamental principle of biology? A:
Answer: theory of evolution

Problem:OPTIONS:
- oil vascular system
- air vascular system
- iron vascular system
- water vascular system

Q: What is considered to be a unique feature of echinoderms? A:
****
A: water vascular system

Q: What is the term for land that has permanently frozen soil? A:
OPTIONS:
- ice desert
- snow-field
- Arctic
- permafrost
permafrost

Q: What do plants respond to in their environment? A:
OPTIONS:
- changes in sunlight or pressure
- changes in temperature or water
- changes in metal or water
- changes in sunlight or water

Answer: changes in sunlight or water

input with options: Q: During karyogamy, the haploid nuclei contributed by the two parents fuse, which produces what? A:
OPTIONS:
- mutated cells
- arisen cells
- cancer cells
- diploid cells
output:
diploid cells