Amedical student is studying how the volume of blood in the circulatory system affects blood pressure. he measures the blood volume and pressure of two classmates, a man and a woman. he finds that the man has a higher blood volume but a lower blood pressure than the woman. he concludes that a person with low blood volume would tend to have high blood pressure. what additional factors should the student consider that would most likely affect blood pressure?

a. differences in overall outlook on life
b. differences in size and gender
c. differences in the day's food intake
d. differences in the amount of recent exercise

What two conditions must be present for osmosis to occur?

Scientists studied reproduction in the new zealand mud snail to answer the question, “are there benefits to reproducing sexually or asexually? ” which of these hypotheses would least likely aid the scientists as they worked to answer the question? sexual reproduction is advantageous over asexual reproduction because it reduces the rate of mutation accumulation. asexual reproduction is advantageous over sexual reproduction because it allows the snails to produce more offspring. sexual reproduction is advantageous over asexual reproduction because it allows for snails to have increased genetic variation. asexual reproduction is advantageous over sexual reproduction because it decreases the snails’ need for social

The bacteria in the human gut feeds on the food we eat and us break it down for better digestion. what does this exemplify? (a) predator-prey cycle (b) parasitism (c) mutualism (d) a disrupted food chain