Only male frog produce croacking sound because: A) Female frog have no larynx
B) Female frog have larynx but no vocal cord
C) Male frog have three pair of vocal cord
D) Male frog can magnify their voice with the help of sound box

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation

Describe the two types of vascular tissue

Explain how light energy is turned into chemical energy? ! due tomorrow!