Write the word/s described by the following statement.
_____1. A photoelectric cell that generates electricity when one of its electrodes is illuminated
_____2. Are the uses to which the natural environment is used for economic ends
_____3. Are the interactions of the organisms with each other and their interactions with the environment
_____4. Is the collection of all the raw materials and natural cycles on earth
_____5. Is the ability of nature to renew itself and its components to cope with human demand​