Test variable (independent variable):The food, pollution, and predators. Outcome variable (dependent variable):The population Control group.

Control group: a regulated species.

Data:
Record your data from each trial in the data chart below:
Type of Factor
Beginning Frog Count
Simulation 1 (Low)
Simulation 2 (High)
Predators (alligators):

Pollution:

Food (mosquitoes):

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

the answer is 12 as i may remember

: )

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y