Lemon juice is 10,000 more acidic than urine
Mutations (changes) to the DNA within the cells.
I believe the order is...
Producers
Primary Consumers
Secondary Consumers
Tertiary Consumers
I hope this helps!
That's hard. The action might be when you go to lift your feet off the ground and the reaction force is letting your feet touch the ground again while taking a stride. Hope this helps.
