5. Nuclear fusion has not yet been harnessed as an energy source because .

lasers are too dangerous
of a lack of deuterium
the energy is hard to control
sufficient pressure cannot be generated

One statements is an example of a scientific observation. another statement is an example of a scientific explanation. identify the correct statement for each category to illustrate how scientific explanations are inferred from scientific observations.

Plz ! for many generations farmers in north america have been choosing to cross corn plants with large ears of corn each year this results in the new generation of plants also growing large ears of corn. what is the technique called? a. selective breeding. b. natural selection. c. mitosis. d. asexual budding.

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?