Cameron works in a junkyard, and he needs a machine that can lift scrap metal and then let go of it Which type of magnet does Cameron needand why?
A.
Cameron needs a magnet like magnet 1 because it can pick up all materials
B
Cameron needs a magnet like magnet 2 because it is stronger than magnet 1
C.
Cameron needs a magnet like magnet 2 because it does not need electricity
D
Cameron needs a magnet like magnet 1 because it can be turned on and off

Answer D:

Cameron needs a magnet like magnet 1 because it can be turned on and off

Explanation:

Although the question doesn't show the magnet types 1and 2 that are mentioned in the answers, what is needed is clearly, a magnet that is not permanent  (a magnet that can be turned on and off like an electromagnet)

okay i have so many questions. but the big one here is: um wt..f is this mess? ?

-first use of geothermal energy occurred more than 10,000 years ago in north america by american paleo-indians

-the first industrial use of geothermal energy began near pisa, italy in late 18th century

-in 1904, italian scientist piero ginori conti invented the first geothermal electric power plant in which steam was used to generate the power

-with the above experiment, the first geothermal plant in usa started in 1922 with a capacity of 250 kilowatts

-however, in 1946 first ground-source geothermal heat pump installed at commonwealth building in portland, oregon

-during the 1960’s, pacific gas and electric began operation of first large scale geothermal power plant in san francisco, producing 11 megawatts

-in 1973, when oil crisis began many countries began looking for renewable energy sources and by 1980’s geothermal heat pumps (ghp) started gaining popularity in order to reduce heating and cooling costs

-as effect of climate change started showing results, governments of various countries joined hands to fight against it, for which kyoto protocol was signed in japan in 1997, laid out emission targets for rich countries and required that they transfer funds and technology to developing countries, 184 countries have ratified it

hope this