Arecent clinical study demonstrated a possible connection between coffee consumption and heart health. the researchers performed
a 6-week trial with 191 individuals, all of whom were heavy coffee drinkers (average of 5 cups/day) prior to the experiment, but none of
whom were smokers. they divided the 191 participants into three groups: no coffee consumption, 1-3 cups/day, and 4 or more
cups/day. they measured blood levels of cholesterol and homocysteine as indicators of heart health only the no-coffee group showed
a significant drop in both indicators. previous studies had demonstrated that decreases of the magnitude observed in the no-coffee
group could cut the incidence of heart disease by 10-15%.
a) what is the problem/question being studied?
b) what is the hypothesis?
c) what is the experimental variable?
d) list the controls
e) what is being measured to test the hypothesis?

answer; ///i believe that the correct answer is (a) specialized cells)

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.  

not sure if this is what you'r looking for eubacteria and archaebacteria