a scientist is interested in how light affect plant growth. the dependent variable is and the independent variable is .

Which is an advantage to using nonrenewable resources? a. they can be cheaper. b. they can have a lower impact on the environment. c. they can be used up rapidly. d. they can contribute to global warming.

‘all monkeys have tails’ is an absolute statement. t or f

Which of the following always exist between two objects having mass ● elastic force ● contact force ●gravitational force ●magnetic force