Q: This sharing of electrons produces what is known as a covalent bond. covalent bonds are ~20 to 50 times stronger than what? Choices: - Mendelian systems - Newton's third law - gravitational pull - van der waals interactions A:
van der waals interactions

Q: What term is used to describe birds that mate for an entire season or even stay paired for their entire life? Choices: - asexual - polygamous - homogeneous - monogamous A:
monogamous

Q: Q: In which period of the periodic table is nickel found? Choices: - First Period - Second Period - Third Period - fourth period A:
A: fourth period

Question: Q: For what kind of animal is communication essential? Choices: - anti-social animals - new born animals - migrating animals - social animals A:
Answer: social animals

*Question*
Q: What has two chains of nucleotides, one more than rna? Choices: - gna - fna - mna - dna A:
**Answer**
dna

(Question)
Q: What can help scientist gather information for an investigation? Choices: - variables - controls - conclusions - observations A:
(Answer)
observations