The sun contributes what to ecosystems?
sun spot energy darkness seeds positive photons Nutrients Energy.
A B C D E F G H
If there is sun, there is sunlight, there is day.
Energy enters ecosystems from the sun.
The sun contributes what to ecosystems? (A) sun spot (B) energy (C) darkness (D) seeds (E) positive (F) photons (G) Nutrients (H) Energy.