2. jess thinks that people who sleep more than 6 hours the night before will
score much higher on a spelling test. she divides a group of 100 volunteers
into two groups. one group sleeps for a minimum of 6 hours the night before
the spelling test. the other group sleeps less than 6 hours. she gives the
same spelling test to all 100 volunteers. then, she grades them and
categorizes her results.
a. independent variable:
b. dependent variable:
c. experimental group:
d. control group:

they deliver oxygen to the blood

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation:

i think its y= -4x-14