Which represents a theory?

I observed three stars in the sky. The stars give off light.

Light travels at 300,000 kilometers per second. Stars are balls of hot gases.

1. During mitosis, a single cell divides to produce two daughter cells. What must happen in the original cell so that each of the daughter cells has a complete set of chromosomes?

Methanogens ·extreme halophiles ·lack a nucleus and cell organelles ·cell walls do not contain peptidoglycan These characteristics describe organisms found in what domain?

An injury in which the epidermis remains intact, but blood vessels and cells in the dermis are injured, is called a (n) : a. contusion. b. abrasion. c. concussion. d. avulsion.

Rick, an athlete, notices a ring shaped inflammation around his neck. Which medication can treat this problem?

What structural problem prevents adenine from pairing with guanine?

Suggest reasons for the acceleration rates in extinction rates in recent decades

How does nutrient losses compare between the natural and clear-cut watersheds

Specific brain differences implicated in schizophrenia often include a change in size of the

Ionic iron is actively transported into the mucosal cells, where it binds to the protein ferritin, a phenomenon called the mucosal iron barrier. True / False.

How do dominant and recessive traits impact genotype and phenotype?