Question

-2:- Fill in the blanks:
i) Animals living in water use
ii) Phenolphthalein is a
iii) Motion along curved path is called
oxygen for respiration.
indicator.
motion.​

Answer 1

Answer:

1) gills for breathing

2) element that reacts with oxygen in air and

get evaporated.

Answer 2

Answer:

First answer. Salt water because many fishes live in group called schools in water