Question

Fill in: breathe, observing, repeat, separate,
struggle.
1. For this study, the psychologist will .......
the girls from the boys.
2. Although I .................. in physics, I do very well
in chemistry.
3. The air we................
is actually 78% nitrogen
and only 21% oxygen.
4. Scientists have to .................. their experiments
again and again to make sure the results are
valid.
5. Biologists have to be patient while they're ...........
animals in the wild.

Answer 1

1. For this study, the psychologist will reparate

the girls from the boys.

2. Although I in physics, I do very well

in chemistry.

3. The air we breathe

is actually 78% nitrogen

and only 21% oxygen.

4. Scientists have to repeat their experiments

again and again to make sure the results are

valid.

5. Biologists have to be patient while they're struggle

animals in the wild.