Pls answer quick! I’ll do 30 points

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

Which of the following is an example of competition that could be found in a forest? question 14 options: deer eat berries and their droppings seed new areas creating more berry bushes two fox populations utilize the same rabbit population as their main food source two hawk populations utilize the same scorpion population as their main food source lack of sunlight due to changes in the seasons restricts the growth of certain plants

In the water cycle , when does water undergo a chemical change