Science U2

Our body needs _________ to survive. (oxygen / carbon dioxide / nitrogen )

Choose the same meaning word: Exhale (breathe in / breathe out)

Air passage connecting the NOSE and LUNGS, called ______________ (w/n/i/d/p/i/e/p)

Which gas makes up 78% of the air we breathe? (oxygen / carbon dioxide / nitrogen )

What is this? (n/i/w/d/p/i/e/n)

Frog can breath in oxygen through their _______ skin when in water. (m/o/s/t/i)

Inhalation and exhalation of air, called ____________ (r/e/s/i/p/t/o/i/n/r/a)

Insects breathe in oxygen from the air through their ________ _____ (b/e/a/r/t/h/g/i h/o/e/l).

Fish have ______ to help them breath in water. (i/g/l/l)

Choose the same meaning word: Inhale (breathe in / breathe out)

Drinking enough _______ and exercising help keep our body healthy.

Swapping one gas for another, called ___________ (a/g/s e/x/c/a/h/e/n/g)

What is this?

____________ is PRODUCED by our body when we carry out daily activities. (oxygen / carbon dioxide / nitrogen )

Air contains different types of _________ (cakes/ gases/ toys)

Gas exchange takes place through the __________ (a/r/i s/c/a/s