Which statement is true about photosynthesis? A: photosynthesis happens in The mitochondria
B:During photosynthesis energy from the sun is stored in the chemical bonds of glucose molecule
C: photosynthesis releases energy to the environment
D: One of the inputs of photosynthesis is oxygen

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.

digestion

it excretes wastes

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.