Q: Q: What distant and extraordinarily energetic objects now seem to be early stages of galactic evolution with a supermassive black-hole-devouring material? A:

OPTIONS:
- pulsars
- stars
- neutrinos
- quasars

A: quasars

Q: Q: What's it called when the reaction is sped up until equilibrium is established? A:

OPTIONS:
- limiting
- pushing
- division
- favoring

A: favoring

Q: Q: What structures of the cardiovascular system help regulate body processes by either constricting or dilating? A:

OPTIONS:
- muscles
- cartilage
- capillaries
- blood vessels

A: blood vessels

Q: Q: What is the accumulated total of all the biochemical reactions occurring in a cell or organism called? A:

OPTIONS:
- respiration
- expansion
- circulation
- metabolism

A:
metabolism