Biology Grade 8 Question Preview (ID: 42759)

a) Variable that the scientist changes

b) Or allows to change in order to cause a

c) Result in change

d) All

a) Changes caused by the changes made by the independent variable

b) Measured by scientists changes for the dependent variable

c) All

d) None

a) It makes up 21%of the atmosphere and is crucial for for sustaining life

b) Algae was one of the first aerobic organisms of earth

c) to produce enough oxygen

d) All

a) All living organisms regardless of size

b) All thing around us

c) Growing items

d) None

a) Water, sunlight

b) Soil, Humus

c) Climate air physiography factors

d) All

a) Relationship which both parties depend on each other

b) People and animals don't need each other

c) they can sustain themselves

d) None

a) Both parties can't affect other people

b) Relationship were 2 parties affect each other

c) They can only talk to each other

d) None

a) Both parties loose out

b) Both parties are not happy

c) Both parties benefit (+/+)

d) None

a) One person benefits

b) The other person is not affected (+/0)

c) All

d) None

a) All the parties are happy

b) When neither party benefits (-/-)

c) Neither can loose

d) None

a) One party benefits

b) The other benefits negatively (+/-)

c) All

d) None

a) light

b) heat

c) summer

d) energy

a) All living organisms need food to grow and survive

b) Plants are known as producers

c) For many other organisms

d) All