Q: A perfectly inelastic collision reduces internal kinetic energy to the minimum it can have while still conserving what? Choices: - heat - energy - elements - momentum A:
momentum

Q: Most hydrozoa have both polyp and what forms in their life cycle? Choices: - hydra - globular - polypoid - medusa A:
medusa

Q: Q: Dna consists of how many long chains of nucleotides? Choices: - three - zero - one - two A:
A: two

Question: Q: A statement that describes what always happens under certain conditions in nature is also known as what? Choices: - theory - hypothesis - scientific motion - scientific law A:
Answer: scientific law

*Question*
Q: What is the third male reprodutive structure after the penis and testes? Choices: - clitoris - scrotum - anus - epididymis A:
**Answer**
epididymis

(Q).
Q: Fossil evidence indicates that the ancestors of humans originated on which continent? Choices: - north america - australia - south america - africa A:
(A).
africa