Lucy decides to make a cake for her mother's birthday. she turns on the oven and sets the temperature to 350
degrees. the oven starts the preheating process and slowly will increase in temperature until it reaches the 350
degrees and then it will stop heating up.
when the oven reaches the 350 degree temperature it is an example of which part of the system?
a. input
b. output
c. feedback
d. none of the above

*will mark brainliest* certain species of are now recognized as indicators of environmental pollution. a. lichen b. mushroom c. yeast d. none of the above

Plants are used for so many things. in your house alone, you can probably look around you and see where plants have been used. for this project, you will identify various uses of plants in your home. directions make a list of objects, products, and any other items around your house where plants were involved in the production of the item. you should have a list of at least twenty items. then respond to the following questions: note: your list of objects and the answers following should be at least 200 words in length. what if plants no longer existed on earth? how would your life be different?

Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat