(due tomorrow)
food chain activity

So the producer should be a plant then the consumer should be like a grasshopper then the consumer should be something that eats grasshoppers (maybe a frog) then get something that eats frogs (birds) then a scavenger (maybe a coyote) then the decomposer which should be a type of fungus

hope I helped :)

Ithink is d. physical property

The mass has escaped into a gas which you can not see so the law stays true.