Heart disease is the leading cause of death among both men and women in the united states. it is usually caused when a sticky substance called plaque builds up in the arteries. often, the only symptoms of heart disease are chest pain or discomfort. why do you think heart disease is so prevalent in the united states? how could heart disease affect other organ systems?

The diagram illustrates the activity of vesicles during a cellular process.

Match each description to the appropriate biome. tropical savanna desert tropical rain forest taiga tundra has sparse vegetation and very cold temperatures located near the equator and contains trees that form dense canopy layers is very hot and dry, and has plants that need little water has cold winters, heavy snowfall and is dominated by conifers has warm temperatures and is dominated by grasses

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants. d. selecting individuals at random.