Electromagnetic Example An investigation was done with an electromagnetic system made from a battery and wire wrapped around a nail. Different sizes of nails were used. The number of paper clips the electromagnet could pick up was measured.
Independent Variable
Dependent Variable

Hydroelectric uses moving water to do work such as grinding grains in a mill true or false

Malthus studied limited resources and the impact of limited resources on human populations. how did these ideas contribute to darwin's ideas? a. limited resources in an environment means that the individuals of a species cooperate so that all individuals survive. b. limited resources in an environment forces some individuals to survive without food. c. limited resources in an environment means that not all individuals of a species will survive or reproduce at equal rates. d. limited resources in an environment forces more genetic changes in individuals, allowing the species to evolve more quickly.

Experiment for carbon dioxide is essential for the process of photosynthesis and to prove that oxygen is produced during photosynthesis a. write laboratory report about the above experiment b. use the following format •introduction •aparatus •method •discussion •conclusion