What is sleep apnea? (2 points)
A. a condition in which an individual stops breathing while asleep, causing a measurable increase in blood oxygen levels
B. a condition in which an individual breathes more frequently while asleep, causing an increase in blood oxygen levels
C. a condition in which an individual stops breathing while asleep, causing a measurable decrease in blood oxygen levels
D. a condition in which an individual breathes more frequently while asleep, causing an decrease in blood oxygen levels

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

the main thing i would use is bricks because if there is a hurricane, there is a great possibility for the house to still stand. and i would also use plexiglass windows instead of regular windows because plexiglass isn't prone to breaking.

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.