24-09-2020
Biology

contestada

Both active solar heating systems and passive solar heating systems
a.must face south
b.use pumps and fans
c.reduce the need to use fossil fuels
d. only work during the day

Respuesta :

bowlofcoleslaw55 bowlofcoleslaw55

24-09-2020

Answer:

Hmm.

Explanation:

C. Reduce the need to use fossil fuels

( If it's not C, then try D)

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