loss of sea ice can cause climate change by the amount of sunlight that is reflected back into the atmosphere

Why isn’t it wenn ich habe hunger but instead it is ween ich hunger habe

El sofà esta a detrás de la ventana b. enfrente

15 can someone translate this paragraph to german? (i created all and the incident went so complicated so most of them might not be senseful but the only important thing is translating not harmony of the text.)