Diseases of the heart and blood vessels are the leading cause of death in the united states.

a. true

b. false

One night, Hans decides to cook a hamburger and spaghetti with meatballs. To test ideas of surface-to-volume ratios, he makes a quarter pound hamburger and a quarter pound meatball and cooks them at the same temperature.

Which choice best describes the phosphorus cycle?

Is xylem a internal and external adaptation? and is pholem an internal or external adaptation

Caused by the pull of the moon and the Sun on the Earth a) gravity b) tides c) eclipses d) moon phases

Which part of the cell membrane does not mix with water?

Which parts make up the major components of the peripheral nervous system autonomic?

What makes agar ideal for cultivation of microbes?

Describe jean Lamarck's idea of evolution

Is it true Without the skeletal system, the body could not fight off infection.

Which statement directly describes the cells produced by meiosis the genetic material of the new cell is diploid the new cells are exact copies of the original cell the genetic material of the original cell is divided among the new cells the new