An insect with three pairs of legs is called:
a thorax
an isopod
a tetrapod
a hexapod

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

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?

In each transformation of energy , some energy what?